[87241] in North American Network Operators' Group
Re: SMTP store and forward requires DSN for integrity
daemon@ATHENA.MIT.EDU (Andrew - Supernews)
Sun Dec 11 03:16:22 2005
To: nanog@merit.edu
In-Reply-To: <1134251678.581.225.camel@bash.adsl-64-142-13-68> (Douglas
Otis's message of "Sat, 10 Dec 2005 13:54:37 -0800")
Date: Sun, 11 Dec 2005 08:15:27 +0000
From: "Andrew - Supernews" <andrew@supernews.net>
Errors-To: owner-nanog@merit.edu
>>>>> "Douglas" == Douglas Otis <dotis@mail-abuse.org> writes:
>> BATV doesn't help you if the problem is SMTP transaction volume,
>> any more than a firewall will help you cope with a saturated
>> network link.
Douglas> Your statement regarding BATV is not correct however. There
Douglas> are two ways BATV reduces SMTP transaction volume when
Douglas> dealing with forged DSNs.
When you're dealing with 30 million incoming DSNs (this is not a
hypothetical figure), being able to reject them all at RCPT TO is
not much help.
I don't see why I should have to engineer my mail server to handle
5,000 times its expected workload just to accomodate all the bozos who
accept-and-bounce, uncontrolled backscatter, "sender verification",
C/R, and all the other cost-shifting methods out there.
--
Andrew, Supernews
http://www.supernews.com
