When sending an email using Outlook via an Exchange server to an external address an NDR is received, which contains a different email address to the one originally sent to.
The address was entered manually.
The sent items & the exchange message tracking show the correct address.
The internal exchange server passes the message to a frontend server & onto mailcontrol.
The logs in mailcontrol show the incorrect address.
eg. the email was sent to firstname.lastname@example.org
Mailcontrol & the NDR show the address email@example.com
The address appears to be changed somewhere between the internal exchange server receiving it & mailcontrol logging its reception.
The following recipient(s) could not be reached:
Ann Name on 05/02/2009 15:37
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<rly50j.srv.mailcontrol.com #5.7.1 SMTP; 550 5.7.1 < firstname.lastname@example.org>... Unrouteable address>