Comment 1 for bug 992040

I'm not sure why this was marked "invalid." It's now two years later and I'm back to report the same issue in the 14.04 server guide. Interestingly, the community documentation is correct:

"As amavis is its own spamassassin-daemon (amavis uses the spamassassin libraries), there is no need in configuring or starting spamassassin. amavis will not use any running instance of spamd! Even changes in /etc/spamassassin will have no effect on the behaviour of amavis."

https://help.ubuntu.com/community/PostfixAmavisNew