I have a server with 4GB of RAm running Debian 5.0 and ISPCFG3
one client sends out a huge newsletter and gets around 6000 bounces back. These bounces all land in the active queue of postfix, amavisd-new has 2 processes running each eating up 40% of my cpu, the load goes to ~4
Basically the server continues to work perfectly but why do all these bounces get stuffed into the active queue?
I read some itneresting articles here: http://www.postfix.com/QSHAPE_README.html
and here: http://www.postfix.org/TUNING_README.html
but I am unsure if postfix is to blame seeing that amavisd-new eats up the CPU cycles.
I read up on amavisd-new and high CPU and all I find are references how to speed up spamassassin which I tried already by taking out slow/big rules and stopped networking tests...
anymore ideas or suggestions?