I was wondering if anyone could point me in the right direction, as I am still new to mail marshal.
I have exchange 2003 running on Server 2003 relaying the mail through the mail marshal.
My e-mails is working 100%, but when I try to send to a specific domain I get the following error almost instantly.
From: My email account
Could not be delivered because of
550 <domain email I am sending to>, Recipient unknown
The following recipients were affected:
Domain email I am sending to
Original Sender: <my email account>
Sender-MTA: <my exchange server IP>
Reporting-MTA: <my mailmarshal server>
Last-Attempt-Date: <12:06:05 Tue, 30 June 2009>
Can anyone please point me in the right direction where to have a look at this?
Is the problem on my mail marshal or on my exchange?
Looking at the error it seems the problem is on my mail marshal but how can I correct this?