I am trying to get Zimbra to blindly accept all incoming mail without checking it for spam content. If I kill amavisd with
sudo -u zimbra /opt/zimbra/bin/zmamavisdctl stop
spam checking stops but mail delivery stops too. Here is a snippet from the log file after I kill amavisd
Feb 20 22:13:56 host postfix/qmgr[16325]: F201CEAF2F0: to=<>, relay=none, delay=553579, status=deferred (delivery temporarily suspended: connect to[]: Connection refused)

Please advise.