One of our user receivng following user when user is sending mail. Kindly help
Your message did not reach some or all of the intended recipients.
Subject: RE: test mail
The following recipient(s) could not be reached:
<user> on 30/03/2009 08:37
The message reached the recipient's e-mail system, but delivery was refused. Attempt to resend the message. If it still fails, contact your system administrator.
I have remove domian name and receipent name due to security
Please let me know if you require more info on this.