We were having an issue with John Smith exchange setup. John was unable to receive email and received the following error:
The following recipient(s) cannot be reached:
Smith, John on 01/15/2010 10:05
A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients.
Contact your administrator.
I looked into the Exchange settings on mailserver01. He was not in the mailbox list on the Exchange server. I pulled up AD Users and Computers and did a “Find”. John was listed as a Domain user, but not an Exchange User. I discovered that for whatever reason he was created an external user. I deleted his external Exchange mail account and recreated it to have a mailbox on the system. Once created, I had to manually add the mailbox types MS, SMTP, and X400.