Potential downside to using (very) old domain as spam trap.
David A. Ulevitch
davidu at everydns.net
Tue Jul 22 14:27:33 UTC 2003
Hi,
I've recently been delegated a domain of a dead ISP which hasn't existed
in *any* form for about 5+ years. As a test, we setup an MX for it to see
what kind of mail it would get since we noted a lot of DNS lookups for it.
After going through a few hundred emails it started to look like the
domain might be good fodder for a blacklist. We couldn't find a single
legit email that passed through spamassassin and a couple other tools.
I've seen people put spamtraps on web pages and at the bottom of emails to
use as blacklist fodder but not a whole domain.
I suppose more rigorous testing could be done to make sure no legit email
is being sent to the domain, but I have a strong feeling that it is very,
very dead. (It even expired at one point and was available from a
registrar.)
Is this done? Advisable? Experiences?
Thanks in advance,
David Ulevitch
----------------------------------------------------
David A. Ulevitch -- http://david.ulevitch.com
http://everydns.net -+- http://communitycolo.net
Campus Box 6957 + Washington University in St. Louis
----------------------------------------------------
More information about the NANOG
mailing list