We upgraded 2 months ago zimbra network edition from 5.0.11_GA to 5.0.23_GA. Upgrade went without problem.At old version 5.0.11_GA we used for spam checking DSPAM, which was helping spamassassin to reduce spam.After upgrade I enabled DSPAM (had some problems with ownership of /opt/zimbra/dspam/bin/ folder). DSPAM worked 2 moths without of problem, one week ago our MTA server started to use high amounts of CPU during night , all email who came to our domain were waiting in mailq until the morning. I found out that the process which was using almost 100% of CPU was /opt/zimbra/dspam/bin/dspam_clean . When i killed this process MTA server started to work normally. So I figure out that our problem was in DSPAM. I disabled DSPAM and next morning everything was working as it should.
My problem is that I want to use DSPAM to help spamassassin to reduce spam mails. Does someone have similar problems with DSPAM? How can I delete DSPAM database ? Does zimbra during upgrade delete DSPAM database?
Tnx and best regards