Exchange 2003 multiple domain names error 550 5.7.1

Mohonk
Mohonk used Ask the Experts™
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I just installed an Exchange 2003 Server at a customers site.  They currently use their web hosting company with pop email accounts. The server is all setup and ready for the MX record change but I have yet to transfer it because I wanted to test out incomming mail first.  I have a few domains registered so I added thebron.com to the recpient policy and created a user with an email address for this site.  The MX recored has been transfered to the exchange server IP.  I can telnet into port 25 using mail.thebron.com.  I cant seem to successfully send email to the email address I setup.  I get the following error:

Sent <<< RCPT TO:<bron@thebron.com>
Received >>> 550 5.7.1 unable to relay for bron@thebron.com
Unable to deliver message to <bron@thebron.com>.

Is this because I dont have their main MX record transfered over to it yet which is how the server is setup?

Im using Road Runner with a Static IP.  Perhaps they are blocking incomming mail to my server?

Thanks for the help!
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Expert of the Year 2007
Expert of the Year 2006

Commented:
Well the outside world can connect to that server, so I don't think it is a connection problem.

Have you confirmed that Exchange will accept email for that domain/email address using telnet?

Simon.

Author

Commented:
I was not able to send mail to bron@thebron.com via a telnet session.  However I was able to send one to an email address I have setup for the domain which I have not transfered over yet.
Expert of the Year 2007
Expert of the Year 2006

Commented:
What error did you get when you use telnet? User unknown? If so that would indicate that recipient policy hasn't taken effect and the server doesn't know it is responsible for email for that domain.

Simon.
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Author

Commented:
The server must be setup wrong.  When I type HELO tischlerdental.com it works fine.  When I type HELO thebron.com it throws a 501 5.5.4 Invalid Address.

Any idea how I can check to see if I have things setup correctly?

Thanks!

Author

Commented:
Scratch that. I restarted the exchange services and now I can HELO to thebron.com.

Now I get an error when I get to RCPT TO:bron@thebron.com - It says "550 5.7.1 Unable to relay for bron@thebron.com"

Thanks
Expert of the Year 2007
Expert of the Year 2006

Commented:
That is a clear indication of recipient policy not being correct or not updating correctly. SMTP doesn't recognise the domain.

Simon.

Author

Commented:
I agree.  Just to clarify how I should have things set.

Right now I have 1 default recipient policy.  Under email addresses i have 2 smtp entries. 1 for @thebron.com and 1 for @tischlerdental.com and 1 X400 entry.

Is this correct or do I need to have seperate policies for each domain name?

Thanks
Expert of the Year 2007
Expert of the Year 2006

Commented:
You don't need separate policies for each domain - you can have all of the domains listed in the same policy. Just ensure that the domains are enabled.

Simon.

Author

Commented:
Is this something I need to do beyond listing the domain name in the policy?
Expert of the Year 2007
Expert of the Year 2006
Commented:
Shouldn't be.
As long as the user accounts are getting an email address in the domain and the domain is enabled (so not just listed, but the box is marked as well) then there should be nothing else you need to do.

Recipient Policy not only creates the email addresses it also controls what domains Exchange accepts email for.

Simon.

Author

Commented:
OK well i was just trying to add the second domain for testing purposes only.  I guess I'll just bite the bullet and transfer the MX records over for the primary domain.

Can I ask you one question?

We are using road runner and when I spoke to them they said we should use our own SMTP relay rather than theirs for sending mail.  Right now I'm using roadrunners and it sends mail OK.  Can you explain how I would go about using the one on my exchange server?
Expert of the Year 2007
Expert of the Year 2006

Commented:
How are you routing email via RoadRunner? An SMTP Connector?
If so, simply change the SMTP Connector to use DNS.

However if you are going to deliver email directly then you need to ensure that you have a reverse DNS record set correctly.

Simon.

Author

Commented:
Perfect!  Thanks so much for the help.  I really appreciate it.

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