Hi The Major Bug which was fixes in later Versions was: (!)DENIED ACCESS due to INVALID PEER IP ADDRESS::ffff:127.0.0.1: lookup_ip_acl (inet_acl): IPv6 address [::ffff:127.0.0.1] contains fewer than 8 fields You can find Notes here: https://lists.amavis.org/pipermail/amavis-users/2013-September/002574.html Seems i'm the only one using amavis on 42.2 with just IPv6 enabled.:) Thanks J�rg