Receiving the message:
The following recipient(s) could not be reached:
'email@example.com' on 10/31/2006 8:53 AM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<server1.domain.local #5.7.1 smtp;550 5.7.1 Message rejected.>
We receive this message no matter which email account we are sending from and only to the domain emergycare.com. This is not the first time we have received a message like this but for a different domain. Can send to any other external domain just fine. I have resolved this in the past by rebooting the Exchange server. I tried restarting the SMTP Virtual server and this did not work. Rebooting the Exchange server is not an acceptable work around.