Interesting People mailing list archives
more on Massive blocking of incoming e-mail by Verizon
From: David Farber <dave () farber net>
Date: Wed, 26 Apr 2006 07:44:46 -0400
Begin forwarded message: From: Rich Kulawiec <rsk () gsp org> Date: April 25, 2006 9:17:37 PM EDT To: David Farber <dave () farber net> Cc: Lauren Weinstein <lauren () vortex com> Subject: Re: [IP] Massive blocking of incoming e-mail by Verizon (not for IP, I've squawked enough already)
but expects customers to know the sending SMTP hostnames of their correspondents to enter on the form.
I wonder if this is yet another variation on their stupid and abusive "callback" scheme -- discussed previously on IP, and thoroughly dissected elsewhere. If Verizon is trying a new and more draconian variation of that, then knowledge of where outgoing MTAs that might be trying to deliver mail there would have value to them in trying to make it work by reducing false positives. But it'd be better if they'd just trash the whole thing: not only is it an abuse reflector, it readily lends itself to various forms of DoS/DDoS attacks. And -- as you point out -- it's silly to think that J. Random Verizon customer will know that mail from their correspondent at the hosted domain fred-flintstone.com is going to come from mta-relay3.barney-rubble.net. Doubly so when it could change tomorrow when no notice to anyone.
It's interesting that this occurs at the same time as the "AOL blocking Gmail" incident, but these events again demonstrate the level of disruption that can triggered by ad hoc blocking moves by the very large ISPs.
Let me go one step further: *ill-advised* ad hoc blocking moves by the very large ISPs. Say what you like about AOL, at least their postmaster team is at the table conferring with their peers and trying to work out policies/procedures that make some sense. Verizon not only isn't there, they refuse to respond at all. (The last representative of Verizon on Spam-L has now been gone for several years -- he left the company.) And on top of all this, let me add a note of timely irony: as you read this, there is a discussion thread in NANAE about how Verizon refuses to accept abuse reports at abuse () verizon net (per RFC 2142 and now nearly-universal practice). ---Rsk ------------------------------------- You are subscribed as lists-ip () insecure org To manage your subscription, go to http://v2.listbox.com/member/?listname=ip Archives at: http://www.interesting-people.org/archives/interesting-people/
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- more on Massive blocking of incoming e-mail by Verizon David Farber (Apr 26)