I had some odd behavior with GroupWise attempting to deliver email to the internet for when a message was addressed as misspelled@ourdomain.com. Normally, I would expect the client to stop and ask the user to resolve the unknown address.

The situation escalated when a message with 400 some recipients was sent. The user copy-pasted the list of recipients, all of whom were addressed as userid@ourdomain.com. The first 20 some recipients received the message. Then there were six some bad addresses with misspelled userids, or non-existent@ourdomain.com. These and the remaining several hundred correctly named users that should have stayed internal were then sent to the GWIA for delivery.

What could casue this to happen, or what settings should I check? We recently enabled flat forwarding, but our system has been pretty unchanged.

GW 12SP3 system.