[Dovecot] Fail2Ban and the Dovecot log

[Lou Duchez]

Ed W wrote:
>
>> Just when I think I've achieved ultimate pefection on this, someone 
>> comes along with a great idea.  Thanks!
> ...
>> action   = iptables-multiport[name=smtppop3imap, 
>> port="smtp,pop3,imap", protocol=tcp]
>
> Can I suggest the name "mail" would summarise the stack of items above?
>
> Did you test this - is it correct?

Totally works!  Though the setting of "2" retries is a bit severe; "4" 
is probably more reasonable.