I need to implement VBounceRuleset - Spamassassin Wiki on our zimbra 5.0.10 server as we have been getting hammered with backscatter vbounces. What version of spamassassin does 5.0.10 use? How would i implement this ruleset if it is not 3.2? In other words, step 2 of that link 2. Save both files to your /etc/mail/spamassassin directory; where is that in relation to zimbra?