I've got the problem with mail releasing from quarantine.
For some users there is ok, but for some users there is a problem with releasing emails.
There is an error like :
Error 46 - MQM Server failed to release the item with the ticket number XXXXXXXXXXXXXXX to its owner on machine (email server IPort)
and the message after releasing is :
MQM operation is denied due to the configuration settings in the McAfee product.