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Was will mir postmaster@mac.com mit dieser Mail mitteilen ? Xxxx aus Datenschutz von mit editiert.

This report relates to a message you sent with the following header fields

Your message has been successfully relayed to the recipients
Reason: Message successfully relayed to a system that does not support receipts
Diagnostic code: dns;mx.xxxxxxxcn.com (TCP|17.16xxxxx161|XXX |65.xxx.254.55|25) (impinc04.yourhostingaccount.com NO UCE ESMTP server ready ) smtp;250 2.1.5 <pn@xxxxxx.com> recipient ok
Remote system: dns;mx.xxxxxxxc .com (TCP|Xxx161|41xxx|65.yxx254.55|25) (impinc04.yourhostingaccount.com NO UCE ESMTP server ready )

on a remote system that does not support the generation of successful
delivery receipts. This does NOT mean that your message has actually been
placed in the recipients' mailboxes; merely that it has passed through a
part of the message transport infrastructure. In the event of a nondelivery
you should expect to receive a nondelivery notification; in the event of
successful delivery, however, you are unlikely to receive a positive
confirmation of delivery.