One of my client who is using Message Labs is getting bounced mails when sending to my company domain. No one else has reported an issue so far. Please find the error message below. Is it something to do from my side ?
This is the mail delivery agent at messagelabs.com.
I was unable to deliver your message to the following addresses:
Reason: 551 5.4.6 [internal] Private/Loopback Address
The message subject was: RE: XXXXXThe message date was: Sun, 18 Sep 2011 08:52:37 +0100 The message identifier was: DD/75-03301-843A57E4 The message reference was:
Please do not reply to this email as it is sent from an unattended mailbox.
Please visit www.messagelabs.com/support
for more details about this error message and instructions to resolve this issue.