dovecot auth using 100% CPU

Edward Betts edward at
Tue Jun 23 12:41:32 UTC 2015

Jorge Bastos <mysql.jorge at> wrote:
> What do you see in the logs?
> My guess is that someone is trying a brute force auth against you,

Thanks Jorge, I think this is the answer. I'm using dovecot for exim4 SMTP
authentication. The exim4 logs show brute force attacks.


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