Postfix and antispamming

[BeNe]

This part should be in your /etc/fail2ban/jail.conf:

Code:

[postfix]
enabled = true
port = smtp
filter = postfix
logpath = /var/log/mail.log
maxretry = 1
bantime = 86400
# 1 month = 2419200; week = 604800; day = 86400

Put the following line to /etc/fail2ban/filter.d/postfix.conf

Code:

failregex = reject: RCPT from (.*)\[<HOST>\]: 550

Add a info like this:

Code:

Your IP-Address is banned from our Mailsystems during the next 24 hours

in your
/usr/sbin/policyd-weight to every 550 code.
You can check the current banned ip´s with

Code:

iptables -L fail2ban-postfix

Greez BeNe