Exchange: The format of the e-mail address is incorrect

Summary: When sending to an internal user; you receive the following NDR:


Your message did not reach some or all of the intended recipients.

Subject: test ignore
Sent: 1/21/2008 11:50 AM

The following recipient(s) cannot be reached:

Joe Test on 1/21/2008 11:50 AM
The format of the e-mail address is incorrect. Check the address, look up the recipient in the Address Book, or contact the recipient directly to find out the correct address.




Resolution: A second SMTP proxy was added. However sending to this SMTP proxy would fail. The email address was correctly formatted without any special characters. A simple removing of the SMTP address and re-entering it in worked without issue. The cause could've have been pasting the address. Sometimes pasting can cause issues.



James Chong (MVP)
MCSE | M+, S+, MCTS, Security+
msexchangetips.blogspot.com