On 28 Dec 2019, at 08:32, SM Hosting.sk <admin at smhosting.sk> wrote: > failregex = (.*) IMAP Error: Login failed for .* from <HOST> Since the failure is from ::1 that is just going to hit localhost and fail2ban isn’t dumb enough to bad localhost. If the from is not being logged properly, you cannot ban it. -- Ninjas don't hug!