Linux/Mailserver/Fail2ban
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< Linux | Mailserver
/etc/fail2ban/jail.local
[postfix]
enabled = true
maxretry = 3
bantime = 21600
findtime = 3600
port = smtp,465,submission
logpath = /var/log/mail/mail.log
/var/log/mail/mail.err
/etc/fail2ban/filter.d/postfix.local
- add:
^%(__prefix_line)slost connection after (?:AUTH|UNKNOWN) from \S+\[<HOST>\]$ </per>