Attila Nagy:
> So:
> - is there any way to let other domains get into the active queue in a
No.
Just like ordinary programs read large files sequentially using a
limited amount of intermediate buffer space, the Postfix queue
manager "reads" a large queue sequentially using a limited amount
of buffer space called "active queue".
There is no mechanism to prioritizes which messages will enter the
active queue. If the active queue is congested by slow destinations,
then you have a few options:
- Find out what is slowing down the deliveries. If a receiving
site is smart, then it will rightfully rate-limit mail from
strangers that send lots of mail without prior arrangements.
- Use a transport map that routes mail to problem domains to a
"graveyard" MTA, so that it won't clog up the deliveries to
"fast" destinations. With a bit of scripting fu, you can kludge
up transport maps on the fly by looking at mailq output.
- Increase the size of the Postfix active queue, and make the
active queue large enough so that it will pick up enough good
destinations (besides bad ones) to keep mail flowing.
Wietse
