A user firstname.lastname@example.org sends me an email. (this is their default reply to address also)
when i respond back - the reply to address is in this format
winnipeg.ca\joe.smith <winnipeg.ca\email@example.com> and of course it bounces back with NDR
The e-mail address you entered couldn't be found. Please check the recipient's e-mail address and try to resend the message. If the problem continues, please contact your helpdesk.
Joe.firstname.lastname@example.org is another valid address for this user
So why does this odd reply to address come up when you reply to emails from this user?
If the sender sends you a message with a malformed address in the header, that's what's going to happen. Look at the headers of the message, particularly the Reply To:.
Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
- Proposed as answer by Ed CrowleyMVP Tuesday, November 19, 2013 11:35 PM
Thanks for the quick reply
Yes- when I look at the header of the original msg it has bad reply to addresses in it. Just not sure why. It was sent from a cellphone - and that seems to be the issue. When he sends from his Outlook client on his computer the reply address is fine.
Something is misconfigured in the phone - but he is far away and I can't get physical access to the phone.