diff --git a/data/conf/postfix/main.cf b/data/conf/postfix/main.cf
index a8e2521a8..080be499a 100644
--- a/data/conf/postfix/main.cf
+++ b/data/conf/postfix/main.cf
@@ -37,7 +37,7 @@ postscreen_access_list = permit_mynetworks,
   cidr:/opt/postfix/conf/postscreen_access.cidr,
   tcp:127.0.0.1:10027
 postscreen_bare_newline_enable = no
-postscreen_blacklist_action = drop
+postscreen_denylist_action = drop
 postscreen_cache_cleanup_interval = 24h
 postscreen_cache_map = proxy:btree:$data_directory/postscreen_cache
 postscreen_dnsbl_action = enforce
diff --git a/docker-compose.yml b/docker-compose.yml
index f2a939218..30a7ba96b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -339,7 +339,7 @@ services:
             - dovecot
 
     postfix-mailcow:
-      image: ghcr.io/mailcow/postfix:3.10.12
+      image: ghcr.io/mailcow/postfix:3.10.12-1
       depends_on:
         mysql-mailcow:
           condition: service_started