On Sun May 15 2005 21:23, David MacQuigg wrote:
My main concern is backward compatibility. Here are the
MAIL FROM: bob(_at_)sales(_dot_)my-company(_dot_)com
The proposed syntax will require extension of SMTP standard [RFC-
2821] and changes in current MTA software and practices. See section
7. IANA Considerations.
MTA software will need to be enhanced and deployed at sites that
provide email authentication. To minimize upgrade efforts these
changes should be bundled with the upgrade to enable authentication.
Receivers that don't recognize the ID command should return a Reply
Code 500 COMMAND UNRECOGNIZED.
This is NOT backward compatible. See separate message on ietf-smtp for
an overview and pointers to detailed references.