Hi,
We are a University in France. The IP range containing
our email relays (130.79.222.208/28) is blocked by hotmail :
$ telnet mx1.hotmail.com 25
Trying 104.44.194.236...
Connected to mx1.hotmail.com.
Escape character is '^]'.
220 SNT004-MC10F10.hotmail.com Sending unsolicited commercial or bulk
e-mail to Microsoft's computer network is prohibited. Other restrictions are
found at http://privacy.microsoft.com/en-us/anti-spam.mspx. Wed, 20 Sep 2017
01:40:31 -0700
EHLO mailhost.u-strasbg.fr
250-SNT004-MC10F10.hotmail.com (3.21.0.283) Hello [130.79.222.211]
[...]
250 OK
MAIL FROM: <...@unistra.fr>
550 SC-002 (SNT004-MC10F10) Unfortunately, messages from 130.79.222.211
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.
When looking in SNDS, everything seems OK: all IP address are green and
said not filtered (though this could reflect old data).
However, the IP status says the whole range is blocked. The reason stated
is "E-mail address harvesting".
We already submitted the Outlook deliverabilty issue form twice but we
are still blocked.
Could this be related to the problem that occured on monday and tuesday ?
What shall we do ?
Thanks for your help.
--
Jean BENOIT
Security Officer
Direction Informatique
Université de Strasbourg, France
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