SMTP Proxy - Email size restriction - NDR?
If you limit the incoming email size using the SMTP Proxy and an incoming message exceeds that limit, can you / or does the firebox issue an NDR to the sender?
Normally, denied packets and connection attempts get rejected silently on the firebox, but it's essential if we end up blocking legitimate email that the sender gets an NDR so we can make alternate arrangements for receiving the message/attachment.
I can't find a definitive answer in the documentation. Thanks in advance.