[67455] in North American Network Operators' Group
RE: [IP] VeriSign prepares to relaunch "Site Finder" -- calls
daemon@ATHENA.MIT.EDU (David Luyer)
Tue Feb 10 04:07:02 2004
From: "David Luyer" <david@luyer.net>
To: <nanog@merit.edu>
Date: Tue, 10 Feb 2004 20:06:24 +1100
In-Reply-To: <200402100503.i1A53jMv009631@turing-police.cc.vt.edu>
Errors-To: owner-nanog-outgoing@merit.edu
> (Yes, that's an operational issue - if they are harvesting and selling =
a
> list of known-good From: addresses on misrouted mail, this will =
eventually
> end up adding to spam - and that's operational)
Site Finder on its own added to spam; spam volumes increased as the =
number=20
of "sender domain does not resolve" bounces dropped away. Also =
customers'
sending addresses no longer underwent this simple sanity check as all =
domain
misspellings resolved.
Although a solution to that part may be a second wildcard:
*.com. IN MX 127.0.0.1
Mailers changed to drop mail for hosts MX'd to 127.0.0.1
This would also fix even more spam -- as people are swamped by spam =
bounces
they sometimes change their own MX to 127.0.0.1. So adding a 127.0.0.1
check to the nonexistent domain check would actually be useful on it's =
own
and mean then wildcard A record wouldn't have the negative impact on =
email.
But it would take some time for people to roll out new mailers/configs =
with
the new rule if it was to be a solution.
David.
