[Dovecot] Method to globally limit network access

[Philipp Wollermann]

Hello,

Marcus O. White wrote:
> I am new to dovecot. I've run across the "allow_net" to restrict access
> on what seems like a per user basis. Is the a way to global limit access
> to one or more networks?
>   
What about using a firewall like iptables for that? :)

Regards,
Philipp