How to ignore email or domain in fail2ban

[isscbta]

If you got into problem with user who is constantly getting his IP banned because wrong email credentials, change this in your /etc/fail2ban/filter.d/dovecot.conf file

First run:

Code: Select all

vi /etc/fail2ban/filter.d/dovecot.conf

FIND:

Code: Select all

ignoreregex =

REPLACE INTO:

Code: Select all

ignoreregex = .*@some-domain.com.*
              .*@another-domain.com.*

Then restart fail2ban:

Code: Select all

systemctl restart fail2ban

In order to check filter to see what fail2ban will really ignore:

Code: Select all

fail2ban-regex -v --print-all-ignored /var/log/dovecot.log /etc/fail2ban/filter.d/dovecot.conf

Big thanks and credits for this going to dpeca