Re: How to limit the time/number of messages an smtp authenticated session may last
On Fri, Jul 27, 2012 at 01:55:33PM +0200, Christian Rohmann wrote:
> I know postfix has quite a few options to configure the connection reuse
> behavior as client, using the "smtp_connection_cache_"-options, but how
> would I approach my problem with postfix being an smtp server and a long
> lasting smtp authenticated session.
There are no such controls for smtpd (unfortunately).
> I could think of a few techniques to find and tear down such unwanted
> connections. But I hope that maybe I did miss some global setting in
> postfix of how long a single smtp session may last, regardless of what
> the client (successfully) does with it. Especially since postfix as smtp
> client has no many options for these kind of issues.
Recently I saw a solution based on postfwd exactly for this case. They
check the sasl_username to decide if the mail gets blocked. The rules
are updated and loaded automatically.