Our server is overloaded (load average: 7.84, 7.28, 5.66). And i find out "neomail.pl" "myspld" "spamd" take most of cpu. For "neomail.pl", I think it is caused by "phplist issue" and I have changed the email sending rate in phplist. But I do not know how to cut down the cpu usage of "mysqld" and "spamd". Any suggestion?