Matthias Andree:
> There is one caveat, though: qmail-send will disassemble multi-recipient
> posts, i. e. you will get one Postfix message and queue ID per recipient
> - and Postfix has some VERP support (Mailman, for instance, uses it.)
>
> If you can somehow manage to inject outgoing mail directly into Postfix,
> so that you can bypass qmail-send, that may help quite a bit. If your
> software talks QMQP for injection into qmail for sending outbound mail,
> you can make Postfix provide a QMQPd.
The following construction has worked for years at securityfocus.com:
SMTP protocol -> qmail -> ezmlm -> QMQPD protocol -> Postfix
This construction was chosen because qmail was falling behind
with email deliveries.
Wietse
