Warning: message 1JTyQU-0000B2-9M delayed 72 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 72 hours on the queue on charly.trkhosting.com.

The message identifier is:     1JTyQU-0000B2-9M
The subject of the message is: February 75% OFF

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

  dsrubin2 at yahoo.com
    (generated from mozilla at rubincs.com)
    Delay reason: SMTP error from remote mail server after end of data:
    host f.mx.mail.yahoo.com [209.191.88.247]: 451 Message temporarily deferred - [70]

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.