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From: Per Abrahamsen <abraham@dina.kvl.dk>
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Subject: Re: `user-mail-address' for message-ids
Date: 27 Feb 2001 18:52:03 +0100
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"Jason R. Mastaler" <jason@mastaler.com> writes:

> Right.  So it still seems that the first part of the Message-ID
> (before @) should be enough to guarantee uniqueness if done correctly.

Nope, there is no way to guarentee that another client will not
generate the same LHS using another algorithm.

> Perhaps if it was a combination of random time, and an aggregate of
> username and numeric userid, then it would not matter if
> `user-mail-address' was used for the second part of the ID.  Right?

Wrong.