Fail2ban Postfix SASL Troubleshooting
Background On some Virtualmin server you may find that Fail2ban is logging events, but soon realize that due to the amount of “already banned” messages
postfix-sasl-jail
Fail2ban postfix-sasl banning not working for a newly install Virtualmin server
Background It’s important to double check your server security at all times. We have found two instances where Fail2ban Postfix SASL banning on default installations