Thanks for the reply Ken. It started working. It was on all mailboxes, the whole system. The IT person was trying to get it working with his new exchange server and it seemed like it had so many processes running that it stopped outgoing mail. This is the what I saw in the internet messaging logs. I took out the settings he had put in the internet messaging fields. Shutdown the MSS and MAS, Brought it back up and it started working. Can you tell me of a good document for integration with the exchange server. I was reading through the documentation of the Modular Messaging, but since now I have to get this working, I don't want to miss anything and have this happen again. The customer has a MSS and MAS and was using just for voicemail with TUI. Thanks