ietf-822
[Top] [All Lists]

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

1998-10-08 11:51:21
On Thu, 8 Oct 1998, Vaudreuil, Greg M (Greg) wrote:
VPIM, RFC 2421 suggests using:

      non-mail-user(_at_)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