Warning: message 1IPEwL-00059w-VJ delayed 24 hours

[Mail Delivery System]

This message was created automatically by mail delivery software.
A message that you sent has not yet been delivered to one or more of its
recipients after more than 24 hours on the queue on mxbackup01.mail.esat.net.

The message identifier is:     1IPEwL-00059w-VJ
The subject of the message is: Mail Delivery (failure webmaster na ryanair.com)
The date of the message is:    Sun, 26 Aug 2007 11:33:36 +0200

The address to which the message has not yet been delivered is:

  webmaster na ryanair.com
    Delay reason: SMTP error from remote mailer after end of data:
    host mail.ryanair.com [193.120.152.1]: 452 4.3.1 mail system failed to handle the data

No action is required on your part. Delivery attempts will continue for
some time, and this warning may be repeated at intervals if the message
remains undelivered. Eventually the mail delivery software will give up,
and when that happens, the message will be returned to you.