[Web][Postfix][Dovecot] Mail policies: compare addresses like Postfix, close bypasses via alias forms, temporary aliases, Sieve and cross-domain groups

data/conf/dovecot/dovecot.conf

@@ -199,6 +199,8 @@ plugin {
   sieve_plugins = sieve_imapsieve sieve_extprograms
   sieve_vacation_send_from_recipient = yes
   sieve_redirect_envelope_from = recipient
+  # Notifications are sent with the address of the mailbox (not :from or postmaster), so mail policies apply
+  sieve_notify_mailto_envelope_from = recipient
   # From elsewhere to Spam folder
   imapsieve_mailbox1_name = Junk
   imapsieve_mailbox1_causes = COPY