Hi,
One of our hosted customers when ever tries to send email to
Hotmail, his messages bounces with below reply. He is connecting from a dynamic
IP, however we have many customers connecting the same way with no problems.
>
This message was created automatically by mail delivery software.
>
>
A message that you sent could not be delivered to all of its recipients. The
>
following address(es) failed:
>
>
XXXXXX@hotmail.com
>
>
The reason for failure was as follows:
>
>
550 Mail rejected by Windows Live Hotmail for policy reasons. We
>
generally do not accept email from dynamic IP's as they are not typically
>
used to deliver unauthenticated SMTP email to an Internet mail server.
>
http://www.spamhaus.org maintains lists of dynamic and residential IP
>
addresses. Contact your ISP to determine which authorized SMTP relay servers
>
to send your mail through (or) request a static and dedicated IP before
>
attempting to send mail. For additional information about Microsoft's
>
technical guidelines, please refer to:
> http://postmaster.live.com/Guidelines.aspx
Any hints please what causes this.
Thanks