I am learning to manage my first dedicated server (RHE3/cPanel9) and I am wondering about logs.

I am finding that my disk usage is growing by about 3 Gigs per day, and it is not from client websites or emails. What does that leave - just the logs?

I am sure the box is secure and not rooted, but I am shocked that 3% of my disk space is disappearing daily.

Any advice what logging can be turned off, what the minimal level of logging should be, how long to keep them, etc?

Any ideas where else to look for the missing space?

The box also runs: APF, BFD, Mailscanner, SpamAssassin, LibSafe, sysctl, LogWatch and Zend if that helps.