I have a user that is receiving the following NDR when sending e-mail:
XXX@anyone.ca' on 9/6/2006 1:11 PM
The e-mail address could not be found. Perhaps the recipient moved to a different e-mail organization, or there was a mistake in the address. Check the address and try again.
<mail.anyone.ca #5.1.8 smtp;551 5.1.8 Relaying denied: From address can not be a remote host, please enable SMTP authentication.>
I have enabled SMTP authentication and this message is still returned.