On Wed, 02 Aug 1995 18:35:57 +0200, you said: > It may just be me but my first impressions are that AOL-users have a bigger > tendency to just disappear than any other netropolitan. Consequently most > delivery problems occur with @aol.com addresses. Let's say, for the sake of discussion, that all network users have a base 2% chance of going away any given month (number picked out of a hat merely because this results in a cumulative almost 100% chance of dissapearance after 4 years, which is just about true for my environment (a university ;)) The Virginia Tech/Blacksburg Electronic Village area has some 60,000 total users (give or take a few thousand). This means that in any given month, we can expect 60,000 * 0.02 or 1,200 addresses dying a month. Let's say AOL has 6,000,000 subscribers. They're going to have 120,000 go belly up a month. Simple matter of scale - you see more AOL addresses fail because literally 20% of all Internet users are at an AOL.COM addres... Valdis Kletnieks Computer Systems Engineer Virginia Tech