Peter Blair:
> On Fri, Aug 5, 2011 at 4:13 AM, Bjron Mork <[email protected]> wrote:
> > I do have the same concerns, is there any way to implement users bases
> > sending policies through postfix ?
>
> Not really. Postfix accepts messages into one of its queues, and will
> pick those messages up (depending on its retry formula) and attempt to
> deliver them. What you want is some brains that will know how many
> messages to a particular class of message has been sent in a given
> time window. Say, X-thousand messages to Y-domain from Z-IP.
>
> Postfix doesn't do that.
>
> PowerMTA does. But then again, that's why most ESPs run with that
> software, so just go with them instead.
Postfix 2.7 and later support-per-sender IP policies and reputation
(via the nexthop-less content filter feature).
Per-transport rate limit support has been available since Postfix 2.5.
See the respective RELEASE_NOTES files for details,
Wietse
