I am having a problem sending emails from our Exchange 5.5 server to one particular vendor. The Exchange 5.5 Server is housed on a Windows 2000 SP1 server within an NT 4.0 domain. We had prior problems sending emails to multiple outside recipients but our MX records were pointed incorrectly to our Exchange 5.5 server. Once this problem was corrected, we could send emails to everyone except one vendor. This is the message that I get when I send from our Exchange Server. The vendor can receive emails from any other address such as a web based address which means their email address is correct.. Please advise.
Your message did not reach some or all of the intended recipients.
Subject: This is a test
Sent: 8/27/2004 8:51 AM
The following recipient(s) could not be reached:
Aparna.Ranganathan@compuware.com on 8/27/2004 8:52 AM
The recipient name is not recognized
The MTS-ID of the original message is: c=US;a= ;p=Central Reserve;l=EXCHANGE2-040827125128Z-26356