5.7.1 Unable to relay Exchange 2003

Hi Experts
Recently I added a second domain to be looked after our Exchange 2003 Server.

1st Domain abc.com
2nd Domain xyz.com

I have configured MX records to point to the Exchange Server.  And I have even placed a recipient policy for xyz.com in Exchange Server and checked that the server is responsible for all mail delivery to this address.  

However when I go to send an email to that address postmaster@xyz.com I get the error message:

Final-Recipient: rfc822;postmaster@xyz.com
Action: failed
Status: 5.7.1
Diagnostic-Code: smtp;550 5.7.1 Unable to relay for postmaster@xyz.com

I can't figure out where I have gone wrong.  Surely the recipients policy entry covers this.

Please help.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Britt ThompsonSr. Systems EngineerCommented:
Do the users you're trying to send to have the email address in their list of email addresses in their Exchange Settings in Active Directory?
Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
Create a test user and give xyz.com as email address and send a test email. Post the bounced message you have.

It will be good to restart the info store service so that exchange is aware of the new domain.
omfgwtflolbbqAuthor Commented:
Hi Guys
I actually solved this one myself.  Turns out that my network has a perimeter SMTP server that handles the email first before passing onto Exchange.  I had to add the domain there in IIS.

1) In IIS Expand Default SMTP Server
2) Right Click Domains
3) Select New -> Select Domain
4) Specify Remote domain Type Click Next
5) Enter the name of the domain click finish

And that fixed my problem


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Email Protocols

From novice to tech pro — start learning today.