We regularly have users who are sending messages (imagine that! ) that get stopped due to a link in the external person's message [if replying to their inbound message] is caught by the Barracuda Real-Time System.
While this is also true for inbound messages, those can be whitelisted by the users and/or at a domain level easily.
Ideally, if we could have a button that enables us to get the particular message re-evaluated from within the portal; failing that, a button that could raise a support ticket to get that action sorted. These could be within the e-mail message, if using the latter option, then it could be set to include the particular message for the Barracuda engineer to save time finding the message.
This would negate the time spent calling in, queuing to speak with someone (who often isn't able to do anything more than raise a ticket) and generally "wasting" the time of support personnel.