Author: David Woodhouse Date: To: Christian Schmidt CC: exim-users Subject: Re: [Exim] Message ID Test, Please Ignore.
On Wed, 2004-02-11 at 13:43 +0100, Christian Schmidt wrote: > Well, which recommendations must (in general) be fulfilled by a
> correct Message-ID?
It MUST be guaranteed to be globally unique -- see §3.6.4 of RFC2822.
Since this is impossible -- as I can intentionally duplicate one of
_your_ message-ids, and indeed produce message-ids which I predict will
match your own future message-ids, it follows that you must never add
one, as you can never guarantee its uniqueness :)
