Just getting GMS up and functional. Running 2.0 SP1. Users are receiving email properly to devices, but when replying from them, replies to internet domains are returned undeliverable. Replies to internal address go through. When the undeliverable comes back, the email message that it was sending to has .GWIA.OurDomain appended to it and gives a Host unknown failure.

Example, as message from my test Yahoo account, testuser@yahoo.com is returned as follows:


Obviously, replies from the GroupWise client go though fine. Where can I look to determine what is causing this and fix it?

GroupWise Version 7 SP1.