MobileMe: Email is delayed or returns to sender with "452" error message

Resolution

Steps the sender can take

When trying to diagnose the issue, the sender should note the following:   

1. The exact me.com or mac.com address the message was sent to.   
2. The date and time the message was sent.   
3. The reason or error number included with the returned message (such as "452 try later").   
4. The contents of the bounced message.

If the sender continues to receive bounced messages, try the following:   

1. Contact the recipient by phone or other means and make sure they know about the bounce and possible reasons.   
2. Try sending again from a different location (use Webmail from a different computer, for example).
   
3. Send mail from a different IP address, or different ISP.

If the sender is unable to reach the affected MobileMe member, he or she can contact MobileMe Support for further assistance. It is recommended that the sender have the full headers and body of the returned message available to provide to support.

Steps the recipient (the MobileMe member) can take

Suggest the above steps to the sender, if you are aware of the issue.

If that does not help, you can contact MobileMe Support for further assistance. Before contacting support, it is recommended that you obtain the full headers from an email sent from the affected sender. If you were able to receive email from the sender previously, you can provide those headers to support. Alternatively, if you have an alternate email address, you might consider requesting the sender to send a test message to that address. If that is not possible, provide the full headers and body of the returned message to support.

Obtaining headers

To gather the full headers from an email message, follow the steps in this article. If you are using an email client application not described in that article, please refer to your application help for more information on obtaining headers.