Re: [exim] exim block auth (geoip)

> From: Emanuel Gonzalez

> lately we are suffering from dictionary attacks, as a prevention method
> I use "fail2ban", but in some cases users use passwords that are
> easy to guess and are used to send spam through bots.

This code blocks both dictionary attacks and stolen passwords used for spam:
https://github.com/Exim/exim/wiki/BlockCracking