A NULL MX Resource Record for Domains that Accept No Mail
draft-delany-nullmx-02

Document Type Replaced Internet-Draft (appsawg WG)
Last updated 2014-01-30 (latest revision 2014-01-03)
Replaced by draft-ietf-appsawg-nullmx
Stream IETF
Intended RFC status (None)
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Expired & archived
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Stream WG state Adopted by a WG
Document shepherd Dave Crocker
IESG IESG state Replaced by draft-ietf-appsawg-nullmx
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-delany-nullmx-02.txt

Abstract

When the 5321.MailFrom domain in an e-mail message has a DNS MX Resource Record (RR), it is making an explicit statement that it is willing to accept email. However, when the domain has just a DNS A or AAAA RR, there mail clients cannot easily tell whether the domain accepts mail, as many hosts on the Internet advertise an A or AAAA RR regardless of whether they want to accept email. The NULL MX RR formalizes the existing mechanism by which a domain announces that it accepts no mail.

Authors

John Levine (standards@taugh.com)
Mark Delany (mx0dot@yahoo.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)