I have External Spam/AV filter that sends directly to my Exchange 2010 Edgeserver(with defaults) then to my exchange 2010 CAS server.
The external Spam filter sends out a weekly reminder if users have spam messages to check but at some point these messages get blocked (so some users get the notification and the rest do not). I have about 400 users
Is there something in Exchange 2010 Exchange or Edge that is deciding that this is bulk email and is blocking them? How can I correct?