Posted by Ondrej Vanek on 04 May 2016 06:06 AM
Subject: Quarantine does not work in certain scenarios
Affected version: 11.4.0.x
Fixed version: 11.4.1
Description:quarantine is not used when message sent to non existent user in backup domain and quarantined emails for inexisting accounts are not appearing in spam queues anymore.
Solution:upgrade to 11.4.1