Delivery Status Notification (Failure)

[Chris Angelico]

On Sat, May 9, 2015 at 8:58 AM, Mail Delivery Subsystem
<mailer-daemon at googlemail.com> wrote:
> Delivery to the following recipient failed permanently:
>
>      abuse at intsystech.com
>
> Technical details of permanent failure:
> Google tried to deliver your message, but it was rejected by the server for the recipient domain intsystech.com by mx01.1and1.com. [74.208.5.21].
>
> The error that the other server returned was:
> 550 Requested action not taken: mailbox unavailable

Thanks, that saves me the trouble of wondering if they'll deal with
it. Flag as spam, folks, flag as spam. They breach protocol by not
accepting abuse at .

ChrisA