On Tue, May 17, 2011 at 05:18:04PM -0400, Vick Khera wrote:
> > Note, instead of forcing random contortions on clients, a server that
> > wants to enforce this feature should simply reply with 421 to RSET after
> > 100 transactions, and Postfix will politely abandon the connection and
> > try a new one.
>
> Apparently they take it as a sign of spaming if you try to send more
> than they want. Ideally, it should work as you describe...
If they accept feedback, feel free to quote me. All these ad-hoc limits
are much better handled via RFC-compliant resposes, than via ad-hoc
policy settings.
The Postfix connection re-use limit is time-based, because this strategy
is more robust in the face of a mixture of slow and fast servers,
enforcing message count limits leads to connection concentration on
the slower servers.
Spam fighters sometimes do significant damage with ineffective cargo-cult
configuration settings intended to fight spam, that just force real MTAs
to jump through pointless hoops.
--
Viktor.
