Zimbra Forums

This is the mail system at host mail.annapost.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<utsavd@hotmail.com>: host mx2.hotmail.com[134.170.2.199] said: 550 OU-001
    (BLU004-MC1F20) Unfortunately, messages from 116.66.198.36 weren't
sent.
    Please contact your Internet service provider since part of their
network
    is on our block list. You can also refer your provider to
    http://mail.live.com/mail/troubleshooting.aspx#errors. (in reply to
MAIL
    FROM command)

Is there a question in your post? There is also a statement in there rhat tells you that the network on which you are located is on a blocklist.