U> From: hugh@domingo.teracons.com (Hugh Daniel) U> For example in NetNews I proposed changing the U> MessageId: headder such that part of the gobldyguk on the U> left side of the atsign was a crypto hash of the body of U> the message and some of the important sending host U> generated headders. With this system of MessageId:'s U> anyone who corrupts a message (intentionaly or otherwise) U> creates a bogus message, as the next machine that gets the U> message can see that the message does not match it U> MessageId: line. There's a FidoNet mailer (Dutchie) that uses MD4 to generate message IDs in exactly this way... They did some cheat, to allow certain filters (CR/LF vs LF, etc) to work. * Origin: World Power Systems / FidoNews / San Francisco CA (1:125/111) -- Tom Jennings - via FidoNet node 1:125/555 UUCP: ...!uunet!hoptoad!kumr!fidogate!111!Tom.Jennings INTERNET: Tom.Jennings@f111.n125.z1.FIDONET.ORG