IP drop list

Benny Pedersen
Sun, 01 Mar 2015 23:34:55 -0000

>   The other side of this equation, Postfix, has had this capability
> for years.  Why it hasn't been added to dovecot is a mystery.  It's
> the only thing (really, the ONLY thing!) that I dislike about dovecot.

http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/AllowNets

then setup fail2ban to manage extrafields