[Dovecot] max connects per host?

[Johan Fredin]

On 08-03-18 18.34, Alex wrote:
> And it is really work. But for probable future option, I think, it is 
> would be wrong way.
> Because this solution limit user _logins_, not connections. So, just for 
> example, I could make very much connections to server and go to end up 
> dovecot connection pool or, if I miss something here, system resources 
> like max_files, max_sockets  and so on. IMHO, more truly solution is 
> limit connections, and check it _before_ login procedure. I understand, 
> that can happen in this case also. But why we will waste our resources 
> to check login/pass, make redundant query to myssql/pgsql/sqlite and so 
> on?  What are you think about that? Comments are very welcome.

I would personally use the operating systems firewall software for this. 
Seems redundant that every piece of software accepting connections 
should duplicate the functionality of a firewall.

/Johan