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From: Per Abrahamsen <abraham@dina.kvl.dk>
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Subject: Re: `user-mail-address' for message-ids
Date: 28 Feb 2001 12:15:42 +0100
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In-Reply-To: <87bsrnmrxw.fsf@deneb.enyo.de> (Florian Weimer's message of "28 Feb 2001 04:01:31 +0100")
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Florian Weimer <fw@deneb.enyo.de> writes:

> If the local-part includes a reasonable amount of entropy, the
> probability of a Message-ID collision is negligible (compared to, say,
> the whole universe vanishing in a quantum fluctuation).

This is the strategy Forte Agent uses.

However, given that there is no standard algorithm for generating the
LHS, and thus no guarantee that the algorithm contains a sufficient
amount of entropy, it makes sense to insist on the rules that exists
for the thr RHS, which at least localizes the problem.

> OTOH, it is extremly bad style to use someone else's FQDN in your
> message IDs.

Which is why Forte has registeret a domain specifically for Agent
message-id's.  It violates the letter of the standard, but at least it
provides a guarentee against collisions with message-id's generated by
other agents.