Odd relaying error 5.7.1 we do not relay
Posted on 2005-04-04
I have an odd relaying issue on SBS 2003 exchange server. We get an intermittent error when sending mail. Users will get an email back almost instantly from our server admin account saying this:
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<hoosiertradewinds.com #5.7.1 smtp;551 5.7.1 we do not relay>
If they double click the message and choose send again, it goes through just fine. I have my exchange server setup to allow relaying for my domain and for authenticated users regardless of restrictions.
I do have 1 domain that I have been able to reproduce this error with. For some reason, all emails to this particular domain are rejected with this error the first time. I am unsure what the problem is.