RE: Proper way to specify "Do Not Reply"?

[Chris Newman <Chris.Newman@xxxxxxxxxxxx>]

On Thu, 8 Oct 1998, Vaudreuil, Greg M (Greg) wrote:
> VPIM, RFC 2421 suggests using:
> 
> 	non-mail-user@domain
> 
> for unrepliable messages.  In this case, message originating from a
> telephone-answering application cannot be replied to.
> RFC 2421 prohibits replies to this special-case address by conforming
> systems.

Hopefully most implementors will ignore that prohibition on the grounds it
violates the more important full-standard requirement (RFC 1123, 5.2.16)
that the local-part is uninterpreted except by the system named on the
right-hand-side. 

I definitely prefer the empty group address for this purpose:

Reply-To: Please Don't Reply:;

It fits RFC 822 syntax and has an obvious interpretation without any
layering violation.

		- Chris