Bypass spam checking for internal messages in Zimbra 8.x

Zimbra normally scans both email exchanged internally (local account) and email from outside the system for spam. As a result, some email may be marked as spam even though it is exchanged between local accounts. To resolve this, bypass spam scanning for email exchanged internally (local account) by running:

$ zmlocalconfig -e amavis_originating_bypass_sa=true

Then restart the amavisd service with:

$ zmamavisdctl restart

* This feature supports only Zimbra Collaboration Suite version 8.x.