I've had the same issue with hotmail when email originates from 208.127.57.0/24. any mail sent from a server within that netblock is properly accepted by hotmail, given a queue id, but disappears and is never delivered. if anyone from hotmail has a clue as to what's going on, it would be appreciated. thanks much ... ----- Gabriel Kuri | Sr. Network Analyst Instructional and Information Technology Division California State Polytechnic University, Pomona http://www.csupomona.edu/~iit | +1 909 979 6363
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Jeroen Wunnink Sent: Wednesday, April 25, 2007 11:22 AM To: nanog@merit.edu Subject: Hotmail blackholing certain IP ranges ?
Does anyone have a clue why hotmail is appearantly blocking certain IP ranges ?
I provided a new server for a customer in his own IP subnet which is a part of a /20 we announce, but for some reason all mail sent to @hotmail.com addresses disappears.
He has another server in a /24 we announce which is still part of another network and that works like a charm.
None of our subnets are blacklisted in any spamfilter I can find, so i'm a bit puzzeled on what's up here.
If any hotmail netadmin is reading this list, can you please check if 81.26.212.0/26 is blocked in any way (It's part of 81.26.208.0/20 originating from AS39556)
According to the mailserver logs all the mail is properly accepted by the hotmail relays, never to be seen again after that.
Met vriendelijke groet,
Jeroen Wunnink, EasyHosting B.V. Systeembeheerder systeembeheer@easyhosting.nl
telefoon:+31 (035) 6285455 Postbus 48 fax: +31 (035) 6838242 3755 ZG Eemnes