Newly installed Virtualmin server, email sending repeatedly prompts for password
On a freshly installed Virtualmin server strange behavior in terms of email sending. Everything looks perfect on port 465 and 587, but sending clients are
postfix-sasl
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
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