> Hello, some times my queu qets filled up with spam and it takes a long
> time to process. Is there a way to configure the queu so when a job
> takes very long it goes to another queu and get process later when the
> queu is empty. Which parameters do I need to adjust in the main.cf.
> Thanks.

Another queue? That means another instance of Postfix. It makes a
reasonable amount of sense, and you can always control how much
bandwidth and processor time your back up queue uses with traffic
shaping and "nice". Here's a how-to on creating a second Postfix
instance:

http://advosys.ca/papers/postfix-instance.html

Chris