Hi Dave,

> -----Original Message-----
> From: Yorkshire Dave

> I'm not sure that having an @foo or @foo.localdomain 
> message-id actually breaks any standards, although it may bend them
> slightly.
> 
> RFC822/2822 seem to refer mainly to the uniqueness of the message-id.
> RFC2822(3.6.4) recommends using the domain name, domain literal ip
> address, or some domain identifier as a method of achieving 
> uniqueness.

Agreed.  Uniqueness is *guaranteed* by the host.  The examples are listed
as:
  Message-ID: <[EMAIL PROTECTED]>
  Message-ID: <[EMAIL PROTECTED]>

I think the problem lies in that this is an optional field.  Seems like many
people offer an interpretation to justify as to how they want to use it - me
included.  I would at least like to see SHOST in the Message-Id.  I would
like to see SHOST in the first Received line.  And I would like to see
hostnames configured as host.some.domain.  After that I would like world
peace followed by a great party. :)

The recommendation you indicate also screams at the reader that it is
"RECOMMENDED that the right hand side contain some domain identifier (either
of the host itself or otherwise) such that the generator of the message
identifier can guarantee the uniqueness of the left hand side within the
scope of that domain."  In other areas, recommendations this strong are
taken as "one must do this".


--Larry



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