OUTLOOK

(IP) .

(ISP) .

(hotmail) (outlook.com) SPAM. ɔ (bad reputation).

outlook.com :
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This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

[email protected]

SMTP error from remote mail server after MAIL FROM:
SIZE=20217:

host mx3.hotmail.com [65.55.37.88]: 550 SC-001 (COL0-MC2-F38)
Unfortunately, messages from XX.XX.XX.XX 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.