9.2.0

### Added

- OpenSearch AWS SigV4 authentication support (PR #673)
- IMAP move/delete compatibility fallbacks (PR #671)
- `fail_on_output_error` CLI option for sink failures (PR #672)
- Gmail service account auth mode for non-interactive runs (PR #676)
- Microsoft Graph certificate authentication support (PRs #692 and #693)
- Microsoft Graph well-known folder fallback for root listing failures (PR #618 and #684 close #609)

### Fixed

- Pass mailbox since filter through `watch_inbox` callback (PR #670 closes issue #581)
- `parsedmarc.mail.gmail.GmailConnection.delete_message` now properly calls the Gmail API (PR #668)
- Avoid extra mailbox fetch in batch and test mode (PR #691 closes #533)

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,72 @@
+name: Bug report
+description: Report a reproducible parsedmarc bug
+title: "[Bug]: "
+labels:
+  - bug
+body:
+  - type: input
+    id: version
+    attributes:
+      label: parsedmarc version
+      description: Include the parsedmarc version or commit if known.
+      placeholder: 9.x.x
+    validations:
+      required: true
+  - type: dropdown
+    id: input_backend
+    attributes:
+      label: Input backend
+      description: Which input path or mailbox backend is involved?
+      options:
+        - IMAP
+        - MS Graph
+        - Gmail API
+        - Maildir
+        - mbox
+        - Local file / direct parse
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: Runtime, container image, OS, Python version, or deployment details.
+      placeholder: Docker on Debian, Python 3.12, parsedmarc installed from PyPI
+    validations:
+      required: true
+  - type: textarea
+    id: config
+    attributes:
+      label: Sanitized config
+      description: Include the relevant config fragment with secrets removed.
+      render: ini
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to reproduce
+      description: Describe the smallest reproducible sequence you can.
+      placeholder: |
+        1. Configure parsedmarc with ...
+        2. Run ...
+        3. Observe ...
+    validations:
+      required: true
+  - type: textarea
+    id: expected_actual
+    attributes:
+      label: Expected vs actual behavior
+      description: What did you expect, and what happened instead?
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs or traceback
+      description: Paste sanitized logs or a traceback if available.
+      render: text
+  - type: textarea
+    id: samples
+    attributes:
+      label: Sample report availability
+      description: If you can share a sanitized sample report or message, note that here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Security issue
+    url: https://github.com/domainaware/parsedmarc/security/policy
+    about: Please use the security policy and avoid filing public issues for undisclosed vulnerabilities.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,30 @@
+name: Feature request
+description: Suggest a new feature or behavior change
+title: "[Feature]: "
+labels:
+  - enhancement
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem statement
+      description: What workflow or limitation are you trying to solve?
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed behavior
+      description: Describe the feature or behavior you want.
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives considered
+      description: Describe workarounds or alternative approaches you considered.
+  - type: textarea
+    id: impact
+    attributes:
+      label: Compatibility or operational impact
+      description: Note config, output, performance, or deployment implications if relevant.

.github/pull_request_template.md

@@ -0,0 +1,24 @@
+## Summary
+
+- 
+
+## Why
+
+- 
+
+## Testing
+
+- 
+
+## Backward Compatibility / Risk
+
+- 
+
+## Related Issue
+
+- Closes #
+
+## Checklist
+
+- [ ] Tests added or updated if behavior changed
+- [ ] Docs updated if config or user-facing behavior changed

.github/workflows/python-tests.yml

@@ -10,7 +10,32 @@ on:
     branches: [ master ]
 
 jobs:
-  build:
+  lint-docs-build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v5
+    - name: Set up Python
+      uses: actions/setup-python@v6
+      with:
+        python-version: "3.13"
+    - name: Install Python dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .[build]
+    - name: Check code style
+      run: |
+        ruff check .
+    - name: Test building documentation
+      run: |
+        cd docs
+        make html
+    - name: Test building packages
+      run: |
+        hatch build
+
+  test:
+    needs: lint-docs-build
     runs-on: ubuntu-latest
 
     services:
@@ -30,7 +55,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
     - uses: actions/checkout@v5
@@ -46,13 +71,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install .[build]
-    - name: Test building documentation
-      run: |
-        cd docs
-        make html
-    - name: Check code style
-      run: |
-        ruff check .
     - name: Run unit tests
       run: |
         pytest --cov --cov-report=xml tests.py
@@ -61,9 +79,6 @@ jobs:
         pip install -e .
         parsedmarc --debug -c ci.ini samples/aggregate/*
         parsedmarc --debug -c ci.ini samples/forensic/*
-    - name: Test building packages
-      run: |
-        hatch build
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v5
       with:

AGENTS.md

@@ -0,0 +1,64 @@
+# AGENTS.md
+
+This file provides guidance to AI agents when working with code in this repository.
+
+## Project Overview
+
+parsedmarc is a Python module and CLI utility for parsing DMARC aggregate (RUA), forensic (RUF), and SMTP TLS reports. It reads reports from IMAP, Microsoft Graph, Gmail API, Maildir, mbox files, or direct file paths, and outputs to JSON/CSV, Elasticsearch, OpenSearch, Splunk, Kafka, S3, Azure Log Analytics, syslog, or webhooks.
+
+## Common Commands
+
+```bash
+# Install with dev/build dependencies
+pip install .[build]
+
+# Run all tests with coverage
+pytest --cov --cov-report=xml tests.py
+
+# Run a single test
+pytest tests.py::Test::testAggregateSamples
+
+# Lint and format
+ruff check .
+ruff format .
+
+# Test CLI with sample reports
+parsedmarc --debug -c ci.ini samples/aggregate/*
+parsedmarc --debug -c ci.ini samples/forensic/*
+
+# Build docs
+cd docs && make html
+
+# Build distribution
+hatch build
+```
+
+To skip DNS lookups during testing, set `GITHUB_ACTIONS=true`.
+
+## Architecture
+
+**Data flow:** Input sources → CLI (`cli.py:_main`) → Parse (`__init__.py`) → Enrich (DNS/GeoIP via `utils.py`) → Output integrations
+
+### Key modules
+
+- `parsedmarc/__init__.py` — Core parsing logic. Main functions: `parse_report_file()`, `parse_report_email()`, `parse_aggregate_report_xml()`, `parse_forensic_report()`, `parse_smtp_tls_report_json()`, `get_dmarc_reports_from_mailbox()`, `watch_inbox()`
+- `parsedmarc/cli.py` — CLI entry point (`_main`), config file parsing, output orchestration
+- `parsedmarc/types.py` — TypedDict definitions for all report types (`AggregateReport`, `ForensicReport`, `SMTPTLSReport`, `ParsingResults`)
+- `parsedmarc/utils.py` — IP/DNS/GeoIP enrichment, base64 decoding, compression handling
+- `parsedmarc/mail/` — Polymorphic mail connections: `IMAPConnection`, `GmailConnection`, `MSGraphConnection`, `MaildirConnection`
+- `parsedmarc/{elastic,opensearch,splunk,kafkaclient,loganalytics,syslog,s3,webhook,gelf}.py` — Output integrations
+
+### Report type system
+
+`ReportType = Literal["aggregate", "forensic", "smtp_tls"]`. Exception hierarchy: `ParserError` → `InvalidDMARCReport` → `InvalidAggregateReport`/`InvalidForensicReport`, and `InvalidSMTPTLSReport`.
+
+### Caching
+
+IP address info cached for 4 hours, seen aggregate report IDs cached for 1 hour (via `ExpiringDict`).
+
+## Code Style
+
+- Ruff for formatting and linting (configured in `.vscode/settings.json`)
+- TypedDict for structured data, type hints throughout
+- Python ≥3.10 required
+- Tests are in a single `tests.py` file using unittest; sample reports live in `samples/`

CHANGELOG.md

@@ -1,5 +1,46 @@
 # Changelog
 
+## 9.2.0
+
+### Added
+
+- OpenSearch AWS SigV4 authentication support (PR #673)
+- IMAP move/delete compatibility fallbacks (PR #671)
+- `fail_on_output_error` CLI option for sink failures (PR #672)
+- Gmail service account auth mode for non-interactive runs (PR #676)
+- Microsoft Graph certificate authentication support (PRs #692 and #693)
+- Microsoft Graph well-known folder fallback for root listing failures (PR #618 and #684 close #609)
+
+### Fixed
+
+- Pass mailbox since filter through `watch_inbox` callback (PR #670 closes issue #581)
+- `parsedmarc.mail.gmail.GmailConnection.delete_message` now properly calls the Gmail API (PR #668)
+- Avoid extra mailbox fetch in batch and test mode (PR #691 closes #533)
+
+## 9.1.2
+
+### Fixes
+
+- Fix duplicate detection for normalized aggregate reports in Elasticsearch/OpenSearch (PR #666 fixes issue #665)
+
+## 9.1.1
+
+### Fixes
+
+- Fix the use of Elasticsearch and OpenSearch API keys (PR #660 fixes issue #653)
+
+### Changes
+
+- Drop support for Python 3.9 (PR #661)
+
+## 9.1.0
+
+## Enhancements
+
+- Add TCP and TLS support for syslog output. (#656)
+- Skip DNS lookups in GitHub Actions to prevent DNS timeouts during tests timeouts. (#657)
+- Remove microseconds from DMARC aggregate report time ranges before parsing them.
+
 ## 9.0.10
 
 - Support Python 3.14+

CLAUDE.md

@@ -0,0 +1,3 @@
+# CLAUD.md
+
+@AGENTS.md

CONTRIBUTING.md

@@ -0,0 +1,78 @@
+# Contributing
+
+Thanks for contributing to parsedmarc.
+
+## Local setup
+
+Use a virtual environment for local development.
+
+```bash
+python3 -m venv .venv
+. .venv/bin/activate
+python -m pip install --upgrade pip
+pip install .[build]
+```
+
+## Before opening a pull request
+
+Run the checks that match your change:
+
+```bash
+ruff check .
+pytest --cov --cov-report=xml tests.py
+```
+
+If you changed documentation:
+
+```bash
+cd docs
+make html
+```
+
+If you changed CLI behavior or parsing logic, it is also useful to exercise the
+sample reports:
+
+```bash
+parsedmarc --debug -c ci.ini samples/aggregate/*
+parsedmarc --debug -c ci.ini samples/forensic/*
+```
+
+To skip DNS lookups during tests, set:
+
+```bash
+GITHUB_ACTIONS=true
+```
+
+## Pull request guidelines
+
+- Keep pull requests small and focused. Separate bug fixes, docs updates, and
+  repo-maintenance changes where practical.
+- Add or update tests when behavior changes.
+- Update docs when configuration or user-facing behavior changes.
+- Include a short summary, the reason for the change, and the testing you ran.
+- Link the related issue when there is one.
+
+## Branch maintenance
+
+Upstream `master` may move quickly. Before asking for review or after another PR
+lands, rebase your branch onto the current upstream branch and force-push with
+lease if needed:
+
+```bash
+git fetch upstream
+git rebase upstream/master
+git push --force-with-lease
+```
+
+## CI and coverage
+
+GitHub Actions is the source of truth for linting, docs, and test status.
+
+Codecov patch coverage is usually the most relevant signal for small PRs. Project
+coverage can be noisier when the base comparison is stale, so interpret it in
+the context of the actual diff.
+
+## Questions
+
+Use GitHub issues for bugs and feature requests. If you are not sure whether a
+change is wanted, opening an issue first is usually the safest path.

README.md

@@ -56,9 +56,9 @@ for RHEL or Debian.
 | 3.6     | ❌         | Used in RHEL 8, but not supported by project dependencies |
 | 3.7     | ❌         | End of Life (EOL)                                          |
 | 3.8     | ❌         | End of Life (EOL)                                          |
-| 3.9     | ✅         | Supported until August 2026 (Debian 11); May 2032 (RHEL 9) |
+| 3.9     | ❌         | Used in Debian 11 and RHEL 9, but not supported by project dependencies |
 | 3.10    | ✅         | Actively maintained                                        |
 | 3.11    | ✅         | Actively maintained; supported until June 2028 (Debian 12) |
 | 3.12    | ✅         | Actively maintained; supported until May 2035 (RHEL 10)    |
 | 3.13    | ✅         | Actively maintained; supported until June 2030 (Debian 13) |
-| 3.14    | ✅         | Actively maintained                                        |
+| 3.14    | ✅         | Supported (requires `imapclient>=3.1.0`)                  |

SECURITY.md

@@ -0,0 +1,29 @@
+# Security Policy
+
+## Reporting a vulnerability
+
+Please do not open a public GitHub issue for an undisclosed security
+vulnerability. Use GitHub private vulnerability reporting in the Security tab of this project instead.
+
+When reporting a vulnerability, include:
+
+- the affected parsedmarc version or commit
+- the component or integration involved
+- clear reproduction details if available
+- potential impact
+- any suggested mitigation or workaround
+
+## Supported versions
+
+Security fixes will be applied to the latest released version and
+the current `master` branch.
+
+Older versions will not receive backported fixes.
+
+## Disclosure process
+
+After a report is received, maintainers can validate the issue, assess impact,
+and coordinate a fix before public disclosure.
+
+Please avoid publishing proof-of-concept details until maintainers have had a
+reasonable opportunity to investigate and release a fix or mitigation.

ci.ini

@@ -3,6 +3,7 @@ save_aggregate = True
 save_forensic = True
 save_smtp_tls = True
 debug = True
+offline = True
 
 [elasticsearch]
 hosts = http://localhost:9200

codecov.yml

@@ -0,0 +1,11 @@
+codecov:
+  require_ci_to_pass: true
+
+coverage:
+  status:
+    project:
+      default:
+        informational: true
+    patch:
+      default:
+        informational: false

docs/source/index.md

@@ -56,12 +56,12 @@ for RHEL or Debian.
 | 3.6     | ❌         | Used in RHEL 8, but not supported by project dependencies |
 | 3.7     | ❌         | End of Life (EOL)                                          |
 | 3.8     | ❌         | End of Life (EOL)                                          |
-| 3.9     | ✅         | Supported until August 2026 (Debian 11); May 2032 (RHEL 9) |
+| 3.9     | ❌         | Used in Debian 11 and RHEL 9, but not supported by project dependencies |
 | 3.10    | ✅         | Actively maintained                                        |
 | 3.11    | ✅         | Actively maintained; supported until June 2028 (Debian 12) |
 | 3.12    | ✅         | Actively maintained; supported until May 2035 (RHEL 10)    |
 | 3.13    | ✅         | Actively maintained; supported until June 2030 (Debian 13) |
-| 3.14    | ✅         | Actively maintained                                        |
+| 3.14    | ✅         | Supported (requires `imapclient>=3.1.0`)                  |
 
 ```{toctree}
 :caption: 'Contents'

docs/source/installation.md

@@ -162,10 +162,10 @@ sudo -u parsedmarc virtualenv /opt/parsedmarc/venv
 ```
 
 CentOS/RHEL 8 systems use Python 3.6 by default, so on those systems
-explicitly tell `virtualenv` to use `python3.9` instead
+explicitly tell `virtualenv` to use `python3.10` instead
 
 ```bash
-sudo -u parsedmarc virtualenv -p python3.9  /opt/parsedmarc/venv
+sudo -u parsedmarc virtualenv -p python3.10  /opt/parsedmarc/venv
 ```
 
 Activate the virtualenv

docs/source/usage.md

@@ -146,6 +146,9 @@ The full set of configuration options are:
   - `dns_timeout` - float: DNS timeout period
   - `debug` - bool: Print debugging messages
   - `silent` - bool: Only print errors (Default: `True`)
+  - `fail_on_output_error` - bool: Exit with a non-zero status code if
+      any configured output destination fails while saving/publishing
+      reports (Default: `False`)
   - `log_file` - str: Write log messages to a file at this path
   - `n_procs` - int: Number of process to run in parallel when
       parsing in CLI mode (Default: `1`)
@@ -200,7 +203,7 @@ The full set of configuration options are:
   - `password` - str: The IMAP password
 - `msgraph`
   - `auth_method` - str: Authentication method, valid types are
-      `UsernamePassword`, `DeviceCode`, or `ClientSecret`
+      `UsernamePassword`, `DeviceCode`, `ClientSecret`, or `Certificate`
       (Default: `UsernamePassword`).
   - `user` - str: The M365 user, required when the auth method is
       UsernamePassword
@@ -208,6 +211,11 @@ The full set of configuration options are:
       method is UsernamePassword
   - `client_id` - str: The app registration's client ID
   - `client_secret` - str: The app registration's secret
+  - `certificate_path` - str: Path to a PEM or PKCS12 certificate
+      including the private key. Required when the auth method is
+      `Certificate`
+  - `certificate_password` - str: Optional password for the
+      certificate file when using `Certificate` auth
   - `tenant_id` - str: The Azure AD tenant ID. This is required
       for all auth methods except UsernamePassword.
   - `mailbox` - str: The mailbox name. This defaults to the
@@ -245,6 +253,9 @@ The full set of configuration options are:
     -Description "Restrict access to dmarc reports mailbox."
     ```
 
+    The same application permission and mailbox scoping guidance
+    applies to the `Certificate` auth method.
+
     :::
 - `elasticsearch`
   - `hosts` - str: A comma separated list of hostnames and ports
@@ -281,6 +292,10 @@ The full set of configuration options are:
   - `user` - str: Basic auth username
   - `password` - str: Basic auth password
   - `api_key` - str: API key
+  - `auth_type` - str: Authentication type: `basic` (default) or `awssigv4` (the key `authentication_type` is accepted as an alias for this option)
+  - `aws_region` - str: AWS region for SigV4 authentication
+    (required when `auth_type = awssigv4`)
+  - `aws_service` - str: AWS service for SigV4 signing (Default: `es`)
   - `ssl` - bool: Use an encrypted SSL/TLS connection
     (Default: `True`)
   - `timeout` - float: Timeout in seconds (Default: 60)
@@ -336,16 +351,77 @@ The full set of configuration options are:
   - `secret_access_key` - str: The secret access key (Optional)
 - `syslog`
   - `server` - str: The Syslog server name or IP address
-  - `port` - int: The UDP port to use (Default: `514`)
+  - `port` - int: The port to use (Default: `514`)
+  - `protocol` - str: The protocol to use: `udp`, `tcp`, or `tls` (Default: `udp`)
+  - `cafile_path` - str: Path to CA certificate file for TLS server verification (Optional)
+  - `certfile_path` - str: Path to client certificate file for TLS authentication (Optional)
+  - `keyfile_path` - str: Path to client private key file for TLS authentication (Optional)
+  - `timeout` - float: Connection timeout in seconds for TCP/TLS (Default: `5.0`)
+  - `retry_attempts` - int: Number of retry attempts for failed connections (Default: `3`)
+  - `retry_delay` - int: Delay in seconds between retry attempts (Default: `5`)
+
+  **Example UDP configuration (default):**
+
+  ```ini
+  [syslog]
+  server = syslog.example.com
+  port = 514
+  ```
+
+  **Example TCP configuration:**
+
+  ```ini
+  [syslog]
+  server = syslog.example.com
+  port = 6514
+  protocol = tcp
+  timeout = 10.0
+  retry_attempts = 5
+  ```
+
+  **Example TLS configuration with server verification:**
+
+  ```ini
+  [syslog]
+  server = syslog.example.com
+  port = 6514
+  protocol = tls
+  cafile_path = /path/to/ca-cert.pem
+  timeout = 10.0
+  ```
+
+  **Example TLS configuration with mutual authentication:**
+
+  ```ini
+  [syslog]
+  server = syslog.example.com
+  port = 6514
+  protocol = tls
+  cafile_path = /path/to/ca-cert.pem
+  certfile_path = /path/to/client-cert.pem
+  keyfile_path = /path/to/client-key.pem
+  timeout = 10.0
+  retry_attempts = 3
+  retry_delay = 5
+  ```
 - `gmail_api`
   - `credentials_file` - str: Path to file containing the
       credentials, None to disable (Default: `None`)
   - `token_file` - str: Path to save the token file
       (Default: `.token`)
+  - `auth_mode` - str: Authentication mode, `installed_app` (default)
+      or `service_account`
+  - `service_account_user` - str: Delegated mailbox user for Gmail
+      service account auth (required for domain-wide delegation). Also
+      accepted as `delegated_user` for backward compatibility.
 
     :::{note}
     credentials_file and token_file can be got with [quickstart](https://developers.google.com/gmail/api/quickstart/python).Please change the scope to `https://www.googleapis.com/auth/gmail.modify`.
     :::
+    :::{note}
+    When `auth_mode = service_account`, `credentials_file` must point to a
+    Google service account key JSON file, and `token_file` is not used.
+    :::
   - `include_spam_trash` - bool: Include messages in Spam and
       Trash when searching reports (Default: `False`)
   - `scopes` - str: Comma separated list of scopes to use when
@@ -450,6 +526,33 @@ PUT _cluster/settings
 Increasing this value increases resource usage.
 :::
 
+## Performance tuning
+
+For large mailbox imports or backfills, parsedmarc can consume a noticeable amount
+of memory, especially when it runs on the same host as Elasticsearch or
+OpenSearch. The following settings can reduce peak memory usage and make long
+imports more predictable:
+
+- Reduce `mailbox.batch_size` to smaller values such as `100-500` instead of
+  processing a very large message set at once. Smaller batches trade throughput
+  for lower peak memory use and less sink pressure.
+- Keep `n_procs` low for mailbox-heavy runs. In practice, `1-2` workers is often
+  a safer starting point for large backfills than aggressive parallelism.
+- Use `mailbox.since` to process reports in smaller time windows such as `1d`,
+  `7d`, or another interval that fits the backlog. This makes it easier to catch
+  up incrementally instead of loading an entire mailbox history in one run.
+- Set `strip_attachment_payloads = True` when forensic reports contain large
+  attachments and you do not need to retain the raw payloads in the parsed
+  output.
+- Prefer running parsedmarc separately from Elasticsearch or OpenSearch, or
+  reserve enough RAM for both services if they must share a host.
+- For very large imports, prefer incremental supervised runs, such as a
+  scheduler or systemd service, over infrequent massive backfills.
+
+These are operational tuning recommendations rather than hard requirements, but
+they are often enough to avoid memory pressure and reduce failures during
+high-volume mailbox processing.
+
 ## Multi-tenant support
 
 Starting in `8.19.0`, ParseDMARC provides multi-tenant support by placing data into separate OpenSearch or Elasticsearch index prefixes. To set this up, create a YAML file that is formatted where each key is a tenant name, and the value is a list of domains related to that tenant, not including subdomains, like this:

parsedmarc/__init__.py

@@ -962,10 +962,12 @@ def extract_report(content: Union[bytes, str, BinaryIO]) -> str:
     return report
 
 
-def extract_report_from_file_path(file_path: str):
+def extract_report_from_file_path(
+    file_path: Union[str, bytes, os.PathLike[str], os.PathLike[bytes]],
+) -> str:
     """Extracts report from a file at the given file_path"""
     try:
-        with open(file_path, "rb") as report_file:
+        with open(os.fspath(file_path), "rb") as report_file:
             return extract_report(report_file.read())
     except FileNotFoundError:
         raise ParserError("File was not found")
@@ -1660,7 +1662,7 @@ def parse_report_email(
 
 
 def parse_report_file(
-    input_: Union[bytes, str, BinaryIO],
+    input_: Union[bytes, str, os.PathLike[str], os.PathLike[bytes], BinaryIO],
     *,
     nameservers: Optional[list[str]] = None,
     dns_timeout: float = 2.0,
@@ -1677,7 +1679,8 @@ def parse_report_file(
     file-like object. or bytes
 
     Args:
-        input_ (str | bytes | BinaryIO): A path to a file, a file like object, or bytes
+        input_ (str | os.PathLike | bytes | BinaryIO): A path to a file,
+            a file-like object, or bytes
         nameservers (list): A list of one or more nameservers to use
             (Cloudflare's public DNS resolvers by default)
         dns_timeout (float): Sets the DNS timeout in seconds
@@ -1694,9 +1697,10 @@ def parse_report_file(
         dict: The parsed DMARC report
     """
     file_object: BinaryIO
-    if isinstance(input_, str):
+    if isinstance(input_, (str, os.PathLike)):
-        logger.debug("Parsing {0}".format(input_))
+        file_path = os.fspath(input_)
-        file_object = open(input_, "rb")
+        logger.debug("Parsing {0}".format(file_path))
+        file_object = open(file_path, "rb")
     elif isinstance(input_, (bytes, bytearray, memoryview)):
         file_object = BytesIO(bytes(input_))
     else:
@@ -2137,14 +2141,17 @@ def get_dmarc_reports_from_mailbox(
         "smtp_tls_reports": smtp_tls_reports,
     }
 
-    if current_time:
+    if not test and not batch_size:
-        total_messages = len(
+        if current_time:
-            connection.fetch_messages(reports_folder, since=current_time)
+            total_messages = len(
-        )
+                connection.fetch_messages(reports_folder, since=current_time)
+            )
+        else:
+            total_messages = len(connection.fetch_messages(reports_folder))
     else:
-        total_messages = len(connection.fetch_messages(reports_folder))
+        total_messages = 0
 
-    if not test and not batch_size and total_messages > 0:
+    if total_messages > 0:
         # Process emails that came in during the last run
         results = get_dmarc_reports_from_mailbox(
             connection=connection,
@@ -2186,6 +2193,7 @@ def watch_inbox(
     dns_timeout: float = 6.0,
     strip_attachment_payloads: bool = False,
     batch_size: int = 10,
+    since: Optional[Union[datetime, date, str]] = None,
     normalize_timespan_threshold_hours: float = 24,
 ):
     """
@@ -2212,6 +2220,7 @@ def watch_inbox(
         strip_attachment_payloads (bool): Replace attachment payloads in
             forensic report samples with None
         batch_size (int): Number of messages to read and process before saving
+        since: Search for messages since certain time
         normalize_timespan_threshold_hours (float): Normalize timespans beyond this
     """
 
@@ -2231,6 +2240,7 @@ def watch_inbox(
             dns_timeout=dns_timeout,
             strip_attachment_payloads=strip_attachment_payloads,
             batch_size=batch_size,
+            since=since,
             create_folders=False,
             normalize_timespan_threshold_hours=normalize_timespan_threshold_hours,
         )

parsedmarc/cli.py

@@ -194,6 +194,13 @@ def _main():
         return None
 
     def process_reports(reports_):
+        output_errors = []
+
+        def log_output_error(destination, error):
+            message = f"{destination} Error: {error}"
+            logger.error(message)
+            output_errors.append(message)
+
         indent_value = 2 if opts.prettify_json else None
         output_str = "{0}\n".format(
             json.dumps(reports_, ensure_ascii=False, indent=indent_value)
@@ -230,11 +237,9 @@ def _main():
                 except elastic.AlreadySaved as warning:
                     logger.warning(warning.__str__())
                 except elastic.ElasticsearchError as error_:
-                    logger.error("Elasticsearch Error: {0}".format(error_.__str__()))
+                    log_output_error("Elasticsearch", error_.__str__())
                 except Exception as error_:
-                    logger.error(
+                    log_output_error("Elasticsearch exception", error_.__str__())
-                        "Elasticsearch exception error: {}".format(error_.__str__())
-                    )
 
                 try:
                     if opts.opensearch_hosts:
@@ -252,11 +257,9 @@ def _main():
                 except opensearch.AlreadySaved as warning:
                     logger.warning(warning.__str__())
                 except opensearch.OpenSearchError as error_:
-                    logger.error("OpenSearch Error: {0}".format(error_.__str__()))
+                    log_output_error("OpenSearch", error_.__str__())
                 except Exception as error_:
-                    logger.error(
+                    log_output_error("OpenSearch exception", error_.__str__())
-                        "OpenSearch exception error: {}".format(error_.__str__())
-                    )
 
                 try:
                     if opts.kafka_hosts:
@@ -264,25 +267,25 @@ def _main():
                             report, kafka_aggregate_topic
                         )
                 except Exception as error_:
-                    logger.error("Kafka Error: {0}".format(error_.__str__()))
+                    log_output_error("Kafka", error_.__str__())
 
                 try:
                     if opts.s3_bucket:
                         s3_client.save_aggregate_report_to_s3(report)
                 except Exception as error_:
-                    logger.error("S3 Error: {0}".format(error_.__str__()))
+                    log_output_error("S3", error_.__str__())
 
                 try:
                     if opts.syslog_server:
                         syslog_client.save_aggregate_report_to_syslog(report)
                 except Exception as error_:
-                    logger.error("Syslog Error: {0}".format(error_.__str__()))
+                    log_output_error("Syslog", error_.__str__())
 
                 try:
                     if opts.gelf_host:
                         gelf_client.save_aggregate_report_to_gelf(report)
                 except Exception as error_:
-                    logger.error("GELF Error: {0}".format(error_.__str__()))
+                    log_output_error("GELF", error_.__str__())
 
                 try:
                     if opts.webhook_aggregate_url:
@@ -291,7 +294,7 @@ def _main():
                             json.dumps(report, ensure_ascii=False, indent=indent_value)
                         )
                 except Exception as error_:
-                    logger.error("Webhook Error: {0}".format(error_.__str__()))
+                    log_output_error("Webhook", error_.__str__())
 
             if opts.hec:
                 try:
@@ -299,7 +302,7 @@ def _main():
                     if len(aggregate_reports_) > 0:
                         hec_client.save_aggregate_reports_to_splunk(aggregate_reports_)
                 except splunk.SplunkError as e:
-                    logger.error("Splunk HEC error: {0}".format(e.__str__()))
+                    log_output_error("Splunk HEC", e.__str__())
 
         if opts.save_forensic:
             for report in reports_["forensic_reports"]:
@@ -319,9 +322,9 @@ def _main():
                 except elastic.AlreadySaved as warning:
                     logger.warning(warning.__str__())
                 except elastic.ElasticsearchError as error_:
-                    logger.error("Elasticsearch Error: {0}".format(error_.__str__()))
+                    log_output_error("Elasticsearch", error_.__str__())
                 except InvalidDMARCReport as error_:
-                    logger.error(error_.__str__())
+                    log_output_error("Invalid DMARC report", error_.__str__())
 
                 try:
                     shards = opts.opensearch_number_of_shards
@@ -339,9 +342,9 @@ def _main():
                 except opensearch.AlreadySaved as warning:
                     logger.warning(warning.__str__())
                 except opensearch.OpenSearchError as error_:
-                    logger.error("OpenSearch Error: {0}".format(error_.__str__()))
+                    log_output_error("OpenSearch", error_.__str__())
                 except InvalidDMARCReport as error_:
-                    logger.error(error_.__str__())
+                    log_output_error("Invalid DMARC report", error_.__str__())
 
                 try:
                     if opts.kafka_hosts:
@@ -349,25 +352,25 @@ def _main():
                             report, kafka_forensic_topic
                         )
                 except Exception as error_:
-                    logger.error("Kafka Error: {0}".format(error_.__str__()))
+                    log_output_error("Kafka", error_.__str__())
 
                 try:
                     if opts.s3_bucket:
                         s3_client.save_forensic_report_to_s3(report)
                 except Exception as error_:
-                    logger.error("S3 Error: {0}".format(error_.__str__()))
+                    log_output_error("S3", error_.__str__())
 
                 try:
                     if opts.syslog_server:
                         syslog_client.save_forensic_report_to_syslog(report)
                 except Exception as error_:
-                    logger.error("Syslog Error: {0}".format(error_.__str__()))
+                    log_output_error("Syslog", error_.__str__())
 
                 try:
                     if opts.gelf_host:
                         gelf_client.save_forensic_report_to_gelf(report)
                 except Exception as error_:
-                    logger.error("GELF Error: {0}".format(error_.__str__()))
+                    log_output_error("GELF", error_.__str__())
 
                 try:
                     if opts.webhook_forensic_url:
@@ -376,7 +379,7 @@ def _main():
                             json.dumps(report, ensure_ascii=False, indent=indent_value)
                         )
                 except Exception as error_:
-                    logger.error("Webhook Error: {0}".format(error_.__str__()))
+                    log_output_error("Webhook", error_.__str__())
 
             if opts.hec:
                 try:
@@ -384,7 +387,7 @@ def _main():
                     if len(forensic_reports_) > 0:
                         hec_client.save_forensic_reports_to_splunk(forensic_reports_)
                 except splunk.SplunkError as e:
-                    logger.error("Splunk HEC error: {0}".format(e.__str__()))
+                    log_output_error("Splunk HEC", e.__str__())
 
         if opts.save_smtp_tls:
             for report in reports_["smtp_tls_reports"]:
@@ -404,9 +407,9 @@ def _main():
                 except elastic.AlreadySaved as warning:
                     logger.warning(warning.__str__())
                 except elastic.ElasticsearchError as error_:
-                    logger.error("Elasticsearch Error: {0}".format(error_.__str__()))
+                    log_output_error("Elasticsearch", error_.__str__())
                 except InvalidDMARCReport as error_:
-                    logger.error(error_.__str__())
+                    log_output_error("Invalid DMARC report", error_.__str__())
 
                 try:
                     shards = opts.opensearch_number_of_shards
@@ -424,9 +427,9 @@ def _main():
                 except opensearch.AlreadySaved as warning:
                     logger.warning(warning.__str__())
                 except opensearch.OpenSearchError as error_:
-                    logger.error("OpenSearch Error: {0}".format(error_.__str__()))
+                    log_output_error("OpenSearch", error_.__str__())
                 except InvalidDMARCReport as error_:
-                    logger.error(error_.__str__())
+                    log_output_error("Invalid DMARC report", error_.__str__())
 
                 try:
                     if opts.kafka_hosts:
@@ -434,25 +437,25 @@ def _main():
                             smtp_tls_reports, kafka_smtp_tls_topic
                         )
                 except Exception as error_:
-                    logger.error("Kafka Error: {0}".format(error_.__str__()))
+                    log_output_error("Kafka", error_.__str__())
 
                 try:
                     if opts.s3_bucket:
                         s3_client.save_smtp_tls_report_to_s3(report)
                 except Exception as error_:
-                    logger.error("S3 Error: {0}".format(error_.__str__()))
+                    log_output_error("S3", error_.__str__())
 
                 try:
                     if opts.syslog_server:
                         syslog_client.save_smtp_tls_report_to_syslog(report)
                 except Exception as error_:
-                    logger.error("Syslog Error: {0}".format(error_.__str__()))
+                    log_output_error("Syslog", error_.__str__())
 
                 try:
                     if opts.gelf_host:
                         gelf_client.save_smtp_tls_report_to_gelf(report)
                 except Exception as error_:
-                    logger.error("GELF Error: {0}".format(error_.__str__()))
+                    log_output_error("GELF", error_.__str__())
 
                 try:
                     if opts.webhook_smtp_tls_url:
@@ -461,7 +464,7 @@ def _main():
                             json.dumps(report, ensure_ascii=False, indent=indent_value)
                         )
                 except Exception as error_:
-                    logger.error("Webhook Error: {0}".format(error_.__str__()))
+                    log_output_error("Webhook", error_.__str__())
 
             if opts.hec:
                 try:
@@ -469,7 +472,7 @@ def _main():
                     if len(smtp_tls_reports_) > 0:
                         hec_client.save_smtp_tls_reports_to_splunk(smtp_tls_reports_)
                 except splunk.SplunkError as e:
-                    logger.error("Splunk HEC error: {0}".format(e.__str__()))
+                    log_output_error("Splunk HEC", e.__str__())
 
         if opts.la_dce:
             try:
@@ -490,14 +493,16 @@ def _main():
                     opts.save_smtp_tls,
                 )
             except loganalytics.LogAnalyticsException as e:
-                logger.error("Log Analytics error: {0}".format(e.__str__()))
+                log_output_error("Log Analytics", e.__str__())
             except Exception as e:
-                logger.error(
+                log_output_error("Log Analytics", f"Unknown publishing error: {e}")
-                    "Unknown error occurred"
+
-                    + " during the publishing"
+        if opts.fail_on_output_error and output_errors:
-                    + " to Log Analytics: "
+            raise ParserError(
-                    + e.__str__()
+                "Output destination failures detected: {0}".format(
+                    " | ".join(output_errors)
                 )
+            )
 
     arg_parser = ArgumentParser(description="Parses DMARC reports")
     arg_parser.add_argument(
@@ -639,6 +644,8 @@ def _main():
         graph_password=None,
         graph_client_id=None,
         graph_client_secret=None,
+        graph_certificate_path=None,
+        graph_certificate_password=None,
         graph_tenant_id=None,
         graph_mailbox=None,
         graph_allow_unencrypted_storage=False,
@@ -671,6 +678,9 @@ def _main():
         opensearch_username=None,
         opensearch_password=None,
         opensearch_api_key=None,
+        opensearch_auth_type="basic",
+        opensearch_aws_region=None,
+        opensearch_aws_service="es",
         kafka_hosts=None,
         kafka_username=None,
         kafka_password=None,
@@ -697,12 +707,21 @@ def _main():
         s3_secret_access_key=None,
         syslog_server=None,
         syslog_port=None,
+        syslog_protocol=None,
+        syslog_cafile_path=None,
+        syslog_certfile_path=None,
+        syslog_keyfile_path=None,
+        syslog_timeout=None,
+        syslog_retry_attempts=None,
+        syslog_retry_delay=None,
         gmail_api_credentials_file=None,
         gmail_api_token_file=None,
         gmail_api_include_spam_trash=False,
         gmail_api_paginate_messages=True,
         gmail_api_scopes=[],
         gmail_api_oauth2_port=8080,
+        gmail_api_auth_mode="installed_app",
+        gmail_api_service_account_user=None,
         maildir_path=None,
         maildir_create=False,
         log_file=args.log_file,
@@ -727,6 +746,7 @@ def _main():
         webhook_smtp_tls_url=None,
         webhook_timeout=60,
         normalize_timespan_threshold_hours=24.0,
+        fail_on_output_error=False,
     )
     args = arg_parser.parse_args()
 
@@ -809,6 +829,10 @@ def _main():
                 opts.silent = bool(general_config.getboolean("silent"))
             if "warnings" in general_config:
                 opts.warnings = bool(general_config.getboolean("warnings"))
+            if "fail_on_output_error" in general_config:
+                opts.fail_on_output_error = bool(
+                    general_config.getboolean("fail_on_output_error")
+                )
             if "log_file" in general_config:
                 opts.log_file = general_config["log_file"]
             if "n_procs" in general_config:
@@ -990,6 +1014,19 @@ def _main():
                     )
                     exit(-1)
 
+            if opts.graph_auth_method == AuthMethod.Certificate.name:
+                if "certificate_path" in graph_config:
+                    opts.graph_certificate_path = graph_config["certificate_path"]
+                else:
+                    logger.critical(
+                        "certificate_path setting missing from the msgraph config section"
+                    )
+                    exit(-1)
+                if "certificate_password" in graph_config:
+                    opts.graph_certificate_password = graph_config[
+                        "certificate_password"
+                    ]
+
             if "client_id" in graph_config:
                 opts.graph_client_id = graph_config["client_id"]
             else:
@@ -1051,10 +1088,10 @@ def _main():
                 opts.elasticsearch_password = elasticsearch_config["password"]
             # Until 8.20
             if "apiKey" in elasticsearch_config:
-                opts.elasticsearch_apiKey = elasticsearch_config["apiKey"]
+                opts.elasticsearch_api_key = elasticsearch_config["apiKey"]
             # Since 8.20
             if "api_key" in elasticsearch_config:
-                opts.elasticsearch_apiKey = elasticsearch_config["api_key"]
+                opts.elasticsearch_api_key = elasticsearch_config["api_key"]
 
         if "opensearch" in config:
             opensearch_config = config["opensearch"]
@@ -1091,10 +1128,20 @@ def _main():
                 opts.opensearch_password = opensearch_config["password"]
             # Until 8.20
             if "apiKey" in opensearch_config:
-                opts.opensearch_apiKey = opensearch_config["apiKey"]
+                opts.opensearch_api_key = opensearch_config["apiKey"]
             # Since 8.20
             if "api_key" in opensearch_config:
-                opts.opensearch_apiKey = opensearch_config["api_key"]
+                opts.opensearch_api_key = opensearch_config["api_key"]
+            if "auth_type" in opensearch_config:
+                opts.opensearch_auth_type = opensearch_config["auth_type"].strip().lower()
+            elif "authentication_type" in opensearch_config:
+                opts.opensearch_auth_type = (
+                    opensearch_config["authentication_type"].strip().lower()
+                )
+            if "aws_region" in opensearch_config:
+                opts.opensearch_aws_region = opensearch_config["aws_region"].strip()
+            if "aws_service" in opensearch_config:
+                opts.opensearch_aws_service = opensearch_config["aws_service"].strip()
 
         if "splunk_hec" in config.sections():
             hec_config = config["splunk_hec"]
@@ -1239,6 +1286,28 @@ def _main():
                 opts.syslog_port = syslog_config["port"]
             else:
                 opts.syslog_port = 514
+            if "protocol" in syslog_config:
+                opts.syslog_protocol = syslog_config["protocol"]
+            else:
+                opts.syslog_protocol = "udp"
+            if "cafile_path" in syslog_config:
+                opts.syslog_cafile_path = syslog_config["cafile_path"]
+            if "certfile_path" in syslog_config:
+                opts.syslog_certfile_path = syslog_config["certfile_path"]
+            if "keyfile_path" in syslog_config:
+                opts.syslog_keyfile_path = syslog_config["keyfile_path"]
+            if "timeout" in syslog_config:
+                opts.syslog_timeout = float(syslog_config["timeout"])
+            else:
+                opts.syslog_timeout = 5.0
+            if "retry_attempts" in syslog_config:
+                opts.syslog_retry_attempts = int(syslog_config["retry_attempts"])
+            else:
+                opts.syslog_retry_attempts = 3
+            if "retry_delay" in syslog_config:
+                opts.syslog_retry_delay = int(syslog_config["retry_delay"])
+            else:
+                opts.syslog_retry_delay = 5
 
         if "gmail_api" in config.sections():
             gmail_api_config = config["gmail_api"]
@@ -1258,6 +1327,16 @@ def _main():
                 opts.gmail_api_oauth2_port = gmail_api_config.getint(
                     "oauth2_port", 8080
                 )
+            if "auth_mode" in gmail_api_config:
+                opts.gmail_api_auth_mode = gmail_api_config.get("auth_mode").strip()
+            if "service_account_user" in gmail_api_config:
+                opts.gmail_api_service_account_user = gmail_api_config.get(
+                    "service_account_user"
+                ).strip()
+            elif "delegated_user" in gmail_api_config:
+                opts.gmail_api_service_account_user = gmail_api_config.get(
+                    "delegated_user"
+                ).strip()
 
         if "maildir" in config.sections():
             maildir_api_config = config["maildir"]
@@ -1409,6 +1488,9 @@ def _main():
                     password=opts.opensearch_password,
                     api_key=opts.opensearch_api_key,
                     timeout=opensearch_timeout_value,
+                    auth_type=opts.opensearch_auth_type,
+                    aws_region=opts.opensearch_aws_region,
+                    aws_service=opts.opensearch_aws_service,
                 )
                 opensearch.migrate_indexes(
                     aggregate_indexes=[os_aggregate_index],
@@ -1436,6 +1518,17 @@ def _main():
             syslog_client = syslog.SyslogClient(
                 server_name=opts.syslog_server,
                 server_port=int(opts.syslog_port),
+                protocol=opts.syslog_protocol or "udp",
+                cafile_path=opts.syslog_cafile_path,
+                certfile_path=opts.syslog_certfile_path,
+                keyfile_path=opts.syslog_keyfile_path,
+                timeout=opts.syslog_timeout if opts.syslog_timeout is not None else 5.0,
+                retry_attempts=opts.syslog_retry_attempts
+                if opts.syslog_retry_attempts is not None
+                else 3,
+                retry_delay=opts.syslog_retry_delay
+                if opts.syslog_retry_delay is not None
+                else 5,
             )
         except Exception as error_:
             logger.error("Syslog Error: {0}".format(error_.__str__()))
@@ -1670,6 +1763,8 @@ def _main():
                 tenant_id=opts.graph_tenant_id,
                 client_id=opts.graph_client_id,
                 client_secret=opts.graph_client_secret,
+                certificate_path=opts.graph_certificate_path,
+                certificate_password=opts.graph_certificate_password,
                 username=opts.graph_user,
                 password=opts.graph_password,
                 token_file=opts.graph_token_file,
@@ -1701,6 +1796,8 @@ def _main():
                 paginate_messages=opts.gmail_api_paginate_messages,
                 reports_folder=opts.mailbox_reports_folder,
                 oauth2_port=opts.gmail_api_oauth2_port,
+                auth_mode=opts.gmail_api_auth_mode,
+                service_account_user=opts.gmail_api_service_account_user,
             )
 
         except Exception:
@@ -1764,7 +1861,11 @@ def _main():
         "smtp_tls_reports": smtp_tls_reports,
     }
 
-    process_reports(parsing_results)
+    try:
+        process_reports(parsing_results)
+    except ParserError as error:
+        logger.error(error.__str__())
+        exit(1)
 
     if opts.smtp_host:
         try:
@@ -1809,6 +1910,7 @@ def _main():
                 dns_timeout=opts.dns_timeout,
                 strip_attachment_payloads=opts.strip_attachment_payloads,
                 batch_size=mailbox_batch_size_value,
+                since=opts.mailbox_since,
                 ip_db_path=opts.ip_db_path,
                 always_use_local_files=opts.always_use_local_files,
                 reverse_dns_map_path=opts.reverse_dns_map_path,
@@ -1819,6 +1921,9 @@ def _main():
         except FileExistsError as error:
             logger.error("{0}".format(error.__str__()))
             exit(1)
+        except ParserError as error:
+            logger.error(error.__str__())
+            exit(1)
 
 
 if __name__ == "__main__":

parsedmarc/constants.py

@@ -1,3 +1,3 @@
-__version__ = "9.0.10"
+__version__ = "9.2.0"
 
 USER_AGENT = f"parsedmarc/{__version__}"

parsedmarc/elastic.py

@@ -413,8 +413,8 @@ def save_aggregate_report_to_elasticsearch(
     org_name_query = Q(dict(match_phrase=dict(org_name=org_name)))  # type: ignore
     report_id_query = Q(dict(match_phrase=dict(report_id=report_id)))  # pyright: ignore[reportArgumentType]
     domain_query = Q(dict(match_phrase={"published_policy.domain": domain}))  # pyright: ignore[reportArgumentType]
-    begin_date_query = Q(dict(match=dict(date_begin=begin_date)))  # pyright: ignore[reportArgumentType]
+    begin_date_query = Q(dict(range=dict(date_begin=dict(gte=begin_date))))  # pyright: ignore[reportArgumentType]
-    end_date_query = Q(dict(match=dict(date_end=end_date)))  # pyright: ignore[reportArgumentType]
+    end_date_query = Q(dict(range=dict(date_end=dict(lte=end_date))))  # pyright: ignore[reportArgumentType]
 
     if index_suffix is not None:
         search_index = "dmarc_aggregate_{0}*".format(index_suffix)

parsedmarc/mail/gmail.py

@@ -10,6 +10,7 @@ from typing import List
 
 from google.auth.transport.requests import Request
 from google.oauth2.credentials import Credentials
+from google.oauth2 import service_account
 from google_auth_oauthlib.flow import InstalledAppFlow
 from googleapiclient.discovery import build
 from googleapiclient.errors import HttpError
@@ -18,7 +19,29 @@ from parsedmarc.log import logger
 from parsedmarc.mail.mailbox_connection import MailboxConnection
 
 
-def _get_creds(token_file, credentials_file, scopes, oauth2_port):
+def _get_creds(
+    token_file,
+    credentials_file,
+    scopes,
+    oauth2_port,
+    auth_mode="installed_app",
+    service_account_user=None,
+):
+    normalized_auth_mode = (auth_mode or "installed_app").strip().lower()
+    if normalized_auth_mode == "service_account":
+        creds = service_account.Credentials.from_service_account_file(
+            credentials_file,
+            scopes=scopes,
+        )
+        if service_account_user:
+            creds = creds.with_subject(service_account_user)
+        return creds
+    if normalized_auth_mode != "installed_app":
+        raise ValueError(
+            f"Unsupported Gmail auth_mode '{auth_mode}'. "
+            "Expected 'installed_app' or 'service_account'."
+        )
+
     creds = None
 
     if Path(token_file).exists():
@@ -47,8 +70,17 @@ class GmailConnection(MailboxConnection):
         reports_folder: str,
         oauth2_port: int,
         paginate_messages: bool,
+        auth_mode: str = "installed_app",
+        service_account_user: str | None = None,
     ):
-        creds = _get_creds(token_file, credentials_file, scopes, oauth2_port)
+        creds = _get_creds(
+            token_file,
+            credentials_file,
+            scopes,
+            oauth2_port,
+            auth_mode=auth_mode,
+            service_account_user=service_account_user,
+        )
         self.service = build("gmail", "v1", credentials=creds)
         self.include_spam_trash = include_spam_trash
         self.reports_label_id = self._find_label_id_for_label(reports_folder)
@@ -126,7 +158,7 @@ class GmailConnection(MailboxConnection):
         return urlsafe_b64decode(msg["raw"]).decode(errors="replace")
 
     def delete_message(self, message_id: str):
-        self.service.users().messages().delete(userId="me", id=message_id)
+        self.service.users().messages().delete(userId="me", id=message_id).execute()
 
     def move_message(self, message_id: str, folder_name: str):
         label_id = self._find_label_id_for_label(folder_name)

parsedmarc/mail/graph.py

@@ -12,19 +12,25 @@ from azure.identity import (
     UsernamePasswordCredential,
     DeviceCodeCredential,
     ClientSecretCredential,
+    CertificateCredential,
     TokenCachePersistenceOptions,
     AuthenticationRecord,
 )
 from msgraph.core import GraphClient
+from requests.exceptions import RequestException
 
 from parsedmarc.log import logger
 from parsedmarc.mail.mailbox_connection import MailboxConnection
 
+GRAPH_REQUEST_RETRY_ATTEMPTS = 3
+GRAPH_REQUEST_RETRY_DELAY_SECONDS = 5
+
 
 class AuthMethod(Enum):
     DeviceCode = 1
     UsernamePassword = 2
     ClientSecret = 3
+    Certificate = 4
 
 
 def _get_cache_args(token_path: Path, allow_unencrypted_storage):
@@ -83,30 +89,55 @@ def _generate_credential(auth_method: str, token_path: Path, **kwargs):
             tenant_id=kwargs["tenant_id"],
             client_secret=kwargs["client_secret"],
         )
+    elif auth_method == AuthMethod.Certificate.name:
+        cert_path = kwargs.get("certificate_path")
+        if not cert_path:
+            raise ValueError(
+                "certificate_path is required when auth_method is 'Certificate'"
+            )
+        credential = CertificateCredential(
+            client_id=kwargs["client_id"],
+            tenant_id=kwargs["tenant_id"],
+            certificate_path=cert_path,
+            password=kwargs.get("certificate_password"),
+        )
     else:
         raise RuntimeError(f"Auth method {auth_method} not found")
     return credential
 
 
 class MSGraphConnection(MailboxConnection):
+    _WELL_KNOWN_FOLDERS = {
+        "inbox": "inbox",
+        "archive": "archive",
+        "drafts": "drafts",
+        "sentitems": "sentitems",
+        "deleteditems": "deleteditems",
+        "junkemail": "junkemail",
+    }
+
     def __init__(
         self,
         auth_method: str,
         mailbox: str,
         graph_url: str,
         client_id: str,
-        client_secret: str,
+        client_secret: Optional[str],
-        username: str,
+        username: Optional[str],
-        password: str,
+        password: Optional[str],
         tenant_id: str,
         token_file: str,
         allow_unencrypted_storage: bool,
+        certificate_path: Optional[str] = None,
+        certificate_password: Optional[Union[str, bytes]] = None,
     ):
         token_path = Path(token_file)
         credential = _generate_credential(
             auth_method,
             client_id=client_id,
             client_secret=client_secret,
+            certificate_path=certificate_path,
+            certificate_password=certificate_password,
             username=username,
             password=password,
             tenant_id=tenant_id,
@@ -117,10 +148,10 @@ class MSGraphConnection(MailboxConnection):
             "credential": credential,
             "cloud": graph_url,
         }
-        if not isinstance(credential, ClientSecretCredential):
+        if not isinstance(credential, (ClientSecretCredential, CertificateCredential)):
             scopes = ["Mail.ReadWrite"]
             # Detect if mailbox is shared
-            if mailbox and username != mailbox:
+            if mailbox and username and username != mailbox:
                 scopes = ["Mail.ReadWrite.Shared"]
             auth_record = credential.authenticate(scopes=scopes)
             _cache_auth_record(auth_record, token_path)
@@ -129,6 +160,23 @@ class MSGraphConnection(MailboxConnection):
         self._client = GraphClient(**client_params)
         self.mailbox_name = mailbox
 
+    def _request_with_retries(self, method_name: str, *args, **kwargs):
+        for attempt in range(1, GRAPH_REQUEST_RETRY_ATTEMPTS + 1):
+            try:
+                return getattr(self._client, method_name)(*args, **kwargs)
+            except RequestException as error:
+                if attempt == GRAPH_REQUEST_RETRY_ATTEMPTS:
+                    raise
+                logger.warning(
+                    "Transient MS Graph %s error on attempt %s/%s: %s",
+                    method_name.upper(),
+                    attempt,
+                    GRAPH_REQUEST_RETRY_ATTEMPTS,
+                    error,
+                )
+                sleep(GRAPH_REQUEST_RETRY_DELAY_SECONDS)
+        raise RuntimeError("no retry attempts configured")
+
     def create_folder(self, folder_name: str):
         sub_url = ""
         path_parts = folder_name.split("/")
@@ -143,7 +191,7 @@ class MSGraphConnection(MailboxConnection):
 
         request_body = {"displayName": folder_name}
         request_url = f"/users/{self.mailbox_name}/mailFolders{sub_url}"
-        resp = self._client.post(request_url, json=request_body)
+        resp = self._request_with_retries("post", request_url, json=request_body)
         if resp.status_code == 409:
             logger.debug(f"Folder {folder_name} already exists, skipping creation")
         elif resp.status_code == 201:
@@ -173,7 +221,7 @@ class MSGraphConnection(MailboxConnection):
             params["$top"] = batch_size
         else:
             params["$top"] = 100
-        result = self._client.get(url, params=params)
+        result = self._request_with_retries("get", url, params=params)
         if result.status_code != 200:
             raise RuntimeError(f"Failed to fetch messages {result.text}")
         messages = result.json()["value"]
@@ -181,7 +229,7 @@ class MSGraphConnection(MailboxConnection):
         while "@odata.nextLink" in result.json() and (
             since is not None or (batch_size == 0 or batch_size - len(messages) > 0)
         ):
-            result = self._client.get(result.json()["@odata.nextLink"])
+            result = self._request_with_retries("get", result.json()["@odata.nextLink"])
             if result.status_code != 200:
                 raise RuntimeError(f"Failed to fetch messages {result.text}")
             messages.extend(result.json()["value"])
@@ -190,7 +238,7 @@ class MSGraphConnection(MailboxConnection):
     def mark_message_read(self, message_id: str):
         """Marks a message as read"""
         url = f"/users/{self.mailbox_name}/messages/{message_id}"
-        resp = self._client.patch(url, json={"isRead": "true"})
+        resp = self._request_with_retries("patch", url, json={"isRead": "true"})
         if resp.status_code != 200:
             raise RuntimeWarning(
                 f"Failed to mark message read{resp.status_code}: {resp.json()}"
@@ -198,7 +246,7 @@ class MSGraphConnection(MailboxConnection):
 
     def fetch_message(self, message_id: str, **kwargs):
         url = f"/users/{self.mailbox_name}/messages/{message_id}/$value"
-        result = self._client.get(url)
+        result = self._request_with_retries("get", url)
         if result.status_code != 200:
             raise RuntimeWarning(
                 f"Failed to fetch message{result.status_code}: {result.json()}"
@@ -210,7 +258,7 @@ class MSGraphConnection(MailboxConnection):
 
     def delete_message(self, message_id: str):
         url = f"/users/{self.mailbox_name}/messages/{message_id}"
-        resp = self._client.delete(url)
+        resp = self._request_with_retries("delete", url)
         if resp.status_code != 204:
             raise RuntimeWarning(
                 f"Failed to delete message {resp.status_code}: {resp.json()}"
@@ -220,7 +268,7 @@ class MSGraphConnection(MailboxConnection):
         folder_id = self._find_folder_id_from_folder_path(folder_name)
         request_body = {"destinationId": folder_id}
         url = f"/users/{self.mailbox_name}/messages/{message_id}/move"
-        resp = self._client.post(url, json=request_body)
+        resp = self._request_with_retries("post", url, json=request_body)
         if resp.status_code != 201:
             raise RuntimeWarning(
                 f"Failed to move message {resp.status_code}: {resp.json()}"
@@ -248,6 +296,19 @@ class MSGraphConnection(MailboxConnection):
         else:
             return self._find_folder_id_with_parent(folder_name, None)
 
+    def _get_well_known_folder_id(self, folder_name: str) -> Optional[str]:
+        folder_key = folder_name.lower().replace(" ", "").replace("-", "")
+        alias = self._WELL_KNOWN_FOLDERS.get(folder_key)
+        if alias is None:
+            return None
+
+        url = f"/users/{self.mailbox_name}/mailFolders/{alias}?$select=id,displayName"
+        folder_resp = self._request_with_retries("get", url)
+        if folder_resp.status_code != 200:
+            return None
+        payload = folder_resp.json()
+        return payload.get("id")
+
     def _find_folder_id_with_parent(
         self, folder_name: str, parent_folder_id: Optional[str]
     ):
@@ -256,8 +317,12 @@ class MSGraphConnection(MailboxConnection):
             sub_url = f"/{parent_folder_id}/childFolders"
         url = f"/users/{self.mailbox_name}/mailFolders{sub_url}"
         filter = f"?$filter=displayName eq '{folder_name}'"
-        folders_resp = self._client.get(url + filter)
+        folders_resp = self._request_with_retries("get", url + filter)
         if folders_resp.status_code != 200:
+            if parent_folder_id is None:
+                well_known_folder_id = self._get_well_known_folder_id(folder_name)
+                if well_known_folder_id:
+                    return well_known_folder_id
             raise RuntimeWarning(f"Failed to list folders.{folders_resp.json()}")
         folders: list = folders_resp.json()["value"]
         matched_folders = [

parsedmarc/mail/imap.py

@@ -55,10 +55,28 @@ class IMAPConnection(MailboxConnection):
         return cast(str, self._client.fetch_message(message_id, parse=False))
 
     def delete_message(self, message_id: int):
-        self._client.delete_messages([message_id])
+        try:
+            self._client.delete_messages([message_id])
+        except IMAPClientError as error:
+            logger.warning(
+                "IMAP delete fallback for message %s due to server error: %s",
+                message_id,
+                error,
+            )
+            self._client.add_flags([message_id], [r"\Deleted"], silent=True)
+            self._client.expunge()
 
     def move_message(self, message_id: int, folder_name: str):
-        self._client.move_messages([message_id], folder_name)
+        try:
+            self._client.move_messages([message_id], folder_name)
+        except IMAPClientError as error:
+            logger.warning(
+                "IMAP move fallback for message %s due to server error: %s",
+                message_id,
+                error,
+            )
+            self._client.copy([message_id], folder_name)
+            self.delete_message(message_id)
 
     def keepalive(self):
         self._client.noop()

parsedmarc/opensearch.py

@@ -4,7 +4,9 @@ from __future__ import annotations
 
 from typing import Any, Optional, Union
 
+import boto3
 from opensearchpy import (
+    AWSV4SignerAuth,
     Boolean,
     Date,
     Document,
@@ -15,6 +17,7 @@ from opensearchpy import (
     Nested,
     Object,
     Q,
+    RequestsHttpConnection,
     Search,
     Text,
     connections,
@@ -272,6 +275,9 @@ def set_hosts(
     password: Optional[str] = None,
     api_key: Optional[str] = None,
     timeout: Optional[float] = 60.0,
+    auth_type: str = "basic",
+    aws_region: Optional[str] = None,
+    aws_service: str = "es",
 ):
     """
     Sets the OpenSearch hosts to use
@@ -284,6 +290,9 @@ def set_hosts(
         password (str): The password to use for authentication
         api_key (str): The Base64 encoded API key to use for authentication
         timeout (float): Timeout in seconds
+        auth_type (str): OpenSearch auth mode: basic (default) or awssigv4
+        aws_region (str): AWS region for SigV4 auth (required for awssigv4)
+        aws_service (str): AWS service for SigV4 signing (default: es)
     """
     if not isinstance(hosts, list):
         hosts = [hosts]
@@ -295,10 +304,32 @@ def set_hosts(
             conn_params["ca_certs"] = ssl_cert_path
         else:
             conn_params["verify_certs"] = False
-    if username and password:
+    normalized_auth_type = (auth_type or "basic").strip().lower()
-        conn_params["http_auth"] = username + ":" + password
+    if normalized_auth_type == "awssigv4":
-    if api_key:
+        if not aws_region:
-        conn_params["api_key"] = api_key
+            raise OpenSearchError(
+                "OpenSearch AWS SigV4 auth requires 'aws_region' to be set"
+            )
+        session = boto3.Session()
+        credentials = session.get_credentials()
+        if credentials is None:
+            raise OpenSearchError(
+                "Unable to load AWS credentials for OpenSearch SigV4 authentication"
+            )
+        conn_params["http_auth"] = AWSV4SignerAuth(
+            credentials, aws_region, aws_service
+        )
+        conn_params["connection_class"] = RequestsHttpConnection
+    elif normalized_auth_type == "basic":
+        if username and password:
+            conn_params["http_auth"] = username + ":" + password
+        if api_key:
+            conn_params["api_key"] = api_key
+    else:
+        raise OpenSearchError(
+            f"Unsupported OpenSearch auth_type '{auth_type}'. "
+            "Expected 'basic' or 'awssigv4'."
+        )
     connections.create_connection(**conn_params)
 
 
@@ -413,8 +444,8 @@ def save_aggregate_report_to_opensearch(
     org_name_query = Q(dict(match_phrase=dict(org_name=org_name)))
     report_id_query = Q(dict(match_phrase=dict(report_id=report_id)))
     domain_query = Q(dict(match_phrase={"published_policy.domain": domain}))
-    begin_date_query = Q(dict(match=dict(date_begin=begin_date)))
+    begin_date_query = Q(dict(range=dict(date_begin=dict(gte=begin_date))))
-    end_date_query = Q(dict(match=dict(date_end=end_date)))
+    end_date_query = Q(dict(range=dict(date_end=dict(lte=end_date))))
 
     if index_suffix is not None:
         search_index = "dmarc_aggregate_{0}*".format(index_suffix)

parsedmarc/syslog.py

@@ -6,7 +6,10 @@ from __future__ import annotations
 import json
 import logging
 import logging.handlers
-from typing import Any
+import socket
+import ssl
+import time
+from typing import Any, Optional
 
 from parsedmarc import (
     parsed_aggregate_reports_to_csv_rows,
@@ -18,20 +21,150 @@ from parsedmarc import (
 class SyslogClient(object):
     """A client for Syslog"""
 
-    def __init__(self, server_name: str, server_port: int):
+    def __init__(
+        self,
+        server_name: str,
+        server_port: int,
+        protocol: str = "udp",
+        cafile_path: Optional[str] = None,
+        certfile_path: Optional[str] = None,
+        keyfile_path: Optional[str] = None,
+        timeout: float = 5.0,
+        retry_attempts: int = 3,
+        retry_delay: int = 5,
+    ):
         """
         Initializes the SyslogClient
         Args:
             server_name (str): The Syslog server
-            server_port (int): The Syslog UDP port
+            server_port (int): The Syslog port
+            protocol (str): The protocol to use: "udp", "tcp", or "tls" (Default: "udp")
+            cafile_path (str): Path to CA certificate file for TLS server verification (Optional)
+            certfile_path (str): Path to client certificate file for TLS authentication (Optional)
+            keyfile_path (str): Path to client private key file for TLS authentication (Optional)
+            timeout (float): Connection timeout in seconds for TCP/TLS (Default: 5.0)
+            retry_attempts (int): Number of retry attempts for failed connections (Default: 3)
+            retry_delay (int): Delay in seconds between retry attempts (Default: 5)
         """
         self.server_name = server_name
         self.server_port = server_port
+        self.protocol = protocol.lower()
+        self.timeout = timeout
+        self.retry_attempts = retry_attempts
+        self.retry_delay = retry_delay
+
         self.logger = logging.getLogger("parsedmarc_syslog")
         self.logger.setLevel(logging.INFO)
-        log_handler = logging.handlers.SysLogHandler(address=(server_name, server_port))
+
+        # Create the appropriate syslog handler based on protocol
+        log_handler = self._create_syslog_handler(
+            server_name,
+            server_port,
+            self.protocol,
+            cafile_path,
+            certfile_path,
+            keyfile_path,
+            timeout,
+            retry_attempts,
+            retry_delay,
+        )
+
         self.logger.addHandler(log_handler)
 
+    def _create_syslog_handler(
+        self,
+        server_name: str,
+        server_port: int,
+        protocol: str,
+        cafile_path: Optional[str],
+        certfile_path: Optional[str],
+        keyfile_path: Optional[str],
+        timeout: float,
+        retry_attempts: int,
+        retry_delay: int,
+    ) -> logging.handlers.SysLogHandler:
+        """
+        Creates a SysLogHandler with the specified protocol and TLS settings
+        """
+        if protocol == "udp":
+            # UDP protocol (default, backward compatible)
+            return logging.handlers.SysLogHandler(
+                address=(server_name, server_port),
+                socktype=socket.SOCK_DGRAM,
+            )
+        elif protocol in ["tcp", "tls"]:
+            # TCP or TLS protocol with retry logic
+            for attempt in range(1, retry_attempts + 1):
+                try:
+                    if protocol == "tcp":
+                        # TCP without TLS
+                        handler = logging.handlers.SysLogHandler(
+                            address=(server_name, server_port),
+                            socktype=socket.SOCK_STREAM,
+                        )
+                        # Set timeout on the socket
+                        if hasattr(handler, "socket") and handler.socket:
+                            handler.socket.settimeout(timeout)
+                        return handler
+                    else:
+                        # TLS protocol
+                        # Create SSL context with secure defaults
+                        ssl_context = ssl.create_default_context()
+
+                        # Explicitly set minimum TLS version to 1.2 for security
+                        ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2
+
+                        # Configure server certificate verification
+                        if cafile_path:
+                            ssl_context.load_verify_locations(cafile=cafile_path)
+
+                        # Configure client certificate authentication
+                        if certfile_path and keyfile_path:
+                            ssl_context.load_cert_chain(
+                                certfile=certfile_path,
+                                keyfile=keyfile_path,
+                            )
+                        elif certfile_path or keyfile_path:
+                            # Warn if only one of the two required parameters is provided
+                            self.logger.warning(
+                                "Both certfile_path and keyfile_path are required for "
+                                "client certificate authentication. Client authentication "
+                                "will not be used."
+                            )
+
+                        # Create TCP handler first
+                        handler = logging.handlers.SysLogHandler(
+                            address=(server_name, server_port),
+                            socktype=socket.SOCK_STREAM,
+                        )
+
+                        # Wrap socket with TLS
+                        if hasattr(handler, "socket") and handler.socket:
+                            handler.socket = ssl_context.wrap_socket(
+                                handler.socket,
+                                server_hostname=server_name,
+                            )
+                            handler.socket.settimeout(timeout)
+
+                        return handler
+
+                except Exception as e:
+                    if attempt < retry_attempts:
+                        self.logger.warning(
+                            f"Syslog connection attempt {attempt}/{retry_attempts} failed: {e}. "
+                            f"Retrying in {retry_delay} seconds..."
+                        )
+                        time.sleep(retry_delay)
+                    else:
+                        self.logger.error(
+                            f"Syslog connection failed after {retry_attempts} attempts: {e}"
+                        )
+                        raise
+        else:
+            raise ValueError(
+                f"Invalid protocol '{protocol}'. Must be 'udp', 'tcp', or 'tls'."
+            )
+
     def save_aggregate_report_to_syslog(self, aggregate_reports: list[dict[str, Any]]):
         rows = parsed_aggregate_reports_to_csv_rows(aggregate_reports)
         for row in rows:

parsedmarc/types.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from typing import Any, Dict, List, Literal, Optional, TypedDict, Union
 
-# NOTE: This module is intentionally Python 3.9 compatible.
+# NOTE: This module is intentionally Python 3.10 compatible.
 # - No PEP 604 unions (A | B)
 # - No typing.NotRequired / Required (3.11+) to avoid an extra dependency.
 #   For optional keys, use total=False TypedDicts.

pyproject.toml

@@ -2,7 +2,7 @@
 requires = [
     "hatchling>=1.27.0",
 ]
-requires_python = ">=3.9,<3.14"
+requires_python = ">=3.10,<3.15"
 build-backend = "hatchling.build"
 
 [project]
@@ -29,7 +29,7 @@ classifiers = [
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3"
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     "azure-identity>=1.8.0",
     "azure-monitor-ingestion>=1.0.0",
@@ -45,7 +45,7 @@ dependencies = [
     "google-auth-httplib2>=0.1.0",
     "google-auth-oauthlib>=0.4.6",
     "google-auth>=2.3.3",
-    "imapclient>=2.1.0",
+    "imapclient>=3.1.0",
     "kafka-python-ng>=2.2.2",
     "lxml>=4.4.0",
     "mailsuite>=1.11.2",