[100094] in North American Network Operators' Group
Any Comcast RBL/Email admins?
daemon@ATHENA.MIT.EDU (Michael Grinnell)
Tue Oct 16 14:54:01 2007
To: list nanog <nanog@merit.edu>
From: Michael Grinnell <grinnell@american.edu>
Date: Tue, 16 Oct 2007 14:52:58 -0400
Errors-To: owner-nanog@merit.edu
Hi,
Our two outbound mail gateways have been blacklisted by Comcast, and
the normal form (http://www.comcastsupport.com/Forms/NET/
blockedprovider.asp) is returning a weird error. See below.
Your request for IP block removal has been denied for the following
reason:
- You have been blocked from emailing the Comcast network because
we have determined that you are sending email from a
dynamic/residential IP within the Comcast domain. Comcast does not
allow subscribers to send email from a mail server other than
smtp.comcast.net. All mail should be sent through Comcast's mail
server. For information on configuring your machine to use
smtp.comcast.net, please follow the link below.
http://www.comcast.net/help/faq/index.jsp?faq=Email117481
Now, I'm pretty sure that our IP address block (147.9) is not part of
Comcast, and we've been unable to get a hold of a person that can
help explain this. Any help would be most appreciated.
Thanks,
Michael Grinnell
Network Security Administrator
The American University
