One of our offices had a dstribution list for all staff in that office. Recently, one of the people from that office transferred to another office. She was removed from the distribution list and added to the list for the new office.
When ever some one sends an email to the distribution list for her old office, they receive and NDR as Follows:
To: CN=Diane Fiorelli,CN=Users,DC=new-york\
Subject: Undeliverable: Lisa Pool is out sick today
Your message did not reach some or all of the intended recipients.
Subject: Lisa Pool is out sick today
Sent: 9/11/2008 8:03 AM
The following recipient(s) could not be reached:
CN=Diane Fiorelli,CN=Users,DC=new-york\ on 9/11/2008 8:03 AM
The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient.
To test I added the user back to the distribution list. She received the emails as she shoudl but the NDR was also generated. I removed her from the distribution list and she stopped receiving the emails, but the NDR's continued as well.
Our domain admin noted that in the past the offices used to be their own domain, New York, Philadelphia, etc. Now there is one domain.
How can we get rid of this "phantom" reference in the distribution list?