GwenDragon

This is because dovecot 2.4 logs to a different format that doesn't match the old filter. As a temp fix you can replace the old filter...

Problem solved with the newest filter from fail2ban repo. Thanks a lot.

fail2ban-client status plesk-dovecot Status for the jail: plesk-dovecot |- Filter | |- Currently failed: 0 | |- Total failed: 0 |...

Fail2ban does not catch bad logins anymore. For example over hours attacker try to login with non-existing mail-users. Product version...