Changed from Dynamic to Static IP -> 550 5.7.1 Unable to relay error. What's the fix?
Posted on 2006-04-27
My client recently changed from dynamic to static IP, and has Exchange Server 2003 running on his machine. DNS is also configured there as well. MX points to mail.lincolnparkone.com (which is the mail server), but still not able to relay.
Error message as follows:
220.127.116.11 does not like recipient.
Remote host said: 550 5.7.1 Unable to relay for email@example.com Giving up on 18.104.22.168.
I am wondering what's the problem here.