One of our customers had complained that email sent to us it being rejected with a return code of SMTP; 554 5.7.1 Relay access denied. So far this is the only person who I know of has an issue sending us email. We recently migrated to Exchange from Groupwise.
He did have this issue before we migrated and I just received another complaint. Below is the information i have on the issue.
Can you tell exactly where the email is being rejected? Why is Patty@gmail one recipients when she is not in the headers on the email?