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 ----------------------------------------------------