I recently set up a second separate email domain on my exchange server. I did it through adding a recipient policy to allow this email domain. I applied to an OU I created all of these separate users for this email domain. Sending and receiving works just fine internally between the different email domains on exchange. Sending email externally also works fine from this new email domain. However receiving external email fails. It gives the following error -
Arrival-Date: Mon, 23 Jul 2007 07:52:03 -0700
Diagnostic-Code: smtp;530 authentication required for relay (#5.7.1)
what am I missing on my exchange server? The existing domain emails work just fine. Please help.
I do have an smtp record for this domain. The company does also employ a smtp scanner. We use GFI mail essentials as our virtual smtp server. It scans emails and forwards onto the exchange server.It has been doing this for the existing domain emails and has been and still is functioning. I added the new domain onto this virtual smtp server as a domain I receive emails for.