Exchange will not send to certain addresses

[nerine]

Just two days now and exchange will not sent mail to this address. "anybody@cogeco.ca". Every other address tried works fine. This has been working fine until two days ago. No change was made to the Exchange server. It reports that "the recipient name is not recognized
The MTS-ID of the original message is: c=US;a="

Has anyone run accross this before.

Thanks....

 

[ShackDaddy]

Are you able to successfully send mail to that address from a Hotmail account? Are you sure that the problem is on your server's end?

 

[nerine]

Yes I have tried several different addresses and they all work except for the one mentioned.

 

[ShackDaddy]

You were a little unclear in your first post. Is this address homed on your server, or is it a remote address you can't send things to? You said "Exchange will not sent mail to this address." Did you mean "Exchange will not deliver mail to this local address?"

If the address is local, was it a custom recipient? Make sure that the custom recipient wasn't deleted and then recreated as a normal mailbox. This can cause a residual problem.

You might also try looking at these articles:

http://support.microsoft.com/default.aspx?scid=kb;EN-US;q237951

http://support.microsoft.com/default.aspx?scid=kb;EN-US;q254264