I am running Exchange 2007 on a Windows 2003 Server. I recently created a user in the domain with a mailbox in Exchange. The user is sending external mail alright but can not receive from outside the organisation. Even when I reply to his sent mail to my hotmail account I get an error message indicates the following
I'm afraid I had problems forwarding your message. Full details follow:
Subject: 'RE: Test'
Date: 'Tue, 14 Oct 2008 13:56:15 +0400'
SMTP Server <x.x.x.x> (Which is the IP address of our server) rejected recipient <firstname.lastname@example.org> (Error following RCPT command). It responded as follows: [550 5.1.1 <email@example.com>: Recipient address rejected: User unknown]
I have also attached the mail's original headers. Sorry it didn't work out.
I have asked somebody and he said there must be something wrong with the recipient_access not working. But I did not understand