troubleshooting Question

Exchange 2003 multiple domain names error 550 5.7.1

Avatar of Mohonk
MohonkFlag for United States of America asked on
ExchangeEmail Servers
13 Comments1 Solution226 ViewsLast Modified:
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 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  I cant seem to successfully send email to the email address I setup.  I get the following error:

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

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!
Join our community to see this answer!
Unlock 1 Answer and 13 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 13 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros