Racker Hacker Words of wisdom from a server administrator

I’ve used this extremely basic procmail configuration a million times, and it’s a great start for any server configuration. It passes e-mails through spamassassin (if they’re smaller than 256KB) and then filters any e-mail marked as spam to /dev/null:
LOGFILE=/var/log/procmail.log
DROPPRIVS=yes
:0fw
| /usr/bin/spamc
:0
* ^X-Spam-Status: Yes
/dev/null
Of course, you can make this much more complicated with some additional customization.

One of my biggest complaints on RHEL 4 is the large resource usage by the version of SpamAssassin that is installed. When it runs, it uses a ton of CPU time and causes a lot of disk I/O as well. When running top, you may see multiple spamd processes. For a high-volume [...]