[80973] in North American Network Operators' Group
Re: VerizonWireless.com Mail Blacklists
daemon@ATHENA.MIT.EDU (Steve Sobol)
Fri May 20 01:05:54 2005
Date: Thu, 19 May 2005 22:05:28 -0700
From: Steve Sobol <sjsobol@JustThe.net>
To: crist.clark@globalstar.com
Cc: North American Networking and Offtopic Gripes List <nanog@nanog.org>
In-Reply-To: <428D2E49.6090205@globalstar.com>
Errors-To: owner-nanog@merit.edu
Crist Clark wrote:
> It appears VerizonWireless.com has some rather aggressive mail filters.
> Verizon.net's blocking of Europe, Asia, Africa... well, everything but
> North America has made some headlines and even some lawsuits. Anyone
> know if VerizonWireless.com and Verizon.net are independent operations
> from an SMTP point of view? Verizon.net has,
>
> http://verizon.net/whitelist
>
> And I haven't found an equivalent for VerizonWireless.com. And given
> the differences in Verizon.net's and VerizonWireless.com's MX setup,
> I doubt they use common resources.
They're different companies. I'm pretty sure they have different server farms
and corporate policies. Verizon owns 100% of Verizon.net and only 55% of
Verizon Wireless.
But that's not to say they don't share information.
I'm going to forward this to an acquaintance I have at Verizon.net and see what
he says.
> FWIW, it really looks like an IP-based blacklist. From our main mail
> server to any of their MX hosts, the 25/tcp connection completes, but
> then their server drops the connection, no banner, no nothing. I get
> a banner and can send mail to their servers from other IP addresses
> outside of that network. My guess is that they're using SPEWS? We're
> collateral damage in a SPEWS block.
I'll find out for you (hopefully).
--
JustThe.net - Apple Valley, CA - http://JustThe.net/ - 888.480.4NET (4638)
Steven J. Sobol, Geek In Charge / sjsobol@JustThe.net / PGP: 0xE3AE35ED
"The wisdom of a fool won't set you free"
--New Order, "Bizarre Love Triangle"
