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Subject: Re: `user-mail-address' for message-ids
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Per Abrahamsen <abraham@dina.kvl.dk> writes:

> Yes.  It would increase the risk of duplicate message ids, i.e. all
> the users of all the machines in our department share the
> 'dina.kvl.dk' mail host name, but I'm the only one using ssv2.

By this argument, using (system-name) for the message-id doesn't
insure uniqueness.  In your case you are the only one using ssv2, but
consider large multiuser servers where hundreds of gnus users may be
using the same machine.