how to tweak cPanel to stop hight load of my server

[xedin]

there alot of traffic from using mail services but almost week my costumerts cant work well because of SPAM
see my system load:
09:22:12 up 2 days, 12:24, 2 users, load average: 23.26, 29.34, 30.49
1037 processes: 969 sleeping, 5 running, 61 zombie, 2 stopped
CPU0 states: 57.0% user 14.1% system 0.0% nice 0.0% iowait 28.0% idle
CPU1 states: 88.0% user 7.1% system 0.0% nice 0.0% iowait 3.0% idle
CPU2 states: 67.0% user 24.0% system 0.0% nice 0.0% iowait 7.1% idle
CPU3 states: 74.0% user 13.0% system 0.0% nice 0.0% iowait 12.0% idle
Mem: 4051932k av, 3582156k used, 469776k free, 0k shrd, 145088k buff
2330184k actv, 532468k in_d, 56436k in_c
Swap: 2008084k av, 478516k used, 1529568k free 1563284k cached

it almost all geting exim, maybe somebosy know that to tweak to stop that?


Thanks!

[eth00]

Are you using catchalls?

Are you using mailscanner

Have you reimplemented RBL lists?

Catchalls can hurt a lot, mailscanner can slow a server down in a hurry, and the RBL should help cut back the number of spams a bit.

It would also be helpful to know if it is incoming out outgoing, sending spam can also overload a server.