The IESG has received a request from the Applications Area Working Group WG (appsawg) to consider the following document: - 'A NULL MX Resource Record for Domains that Accept No Mail' <draft-ietf-appsawg-nullmx-05.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2014-07-17. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract Internet mail determines the address of a receiving server through the DNS, first by looking for an MX record and then by looking for an A/AAAA record as a fallback. Unfortunately this means that the A/ AAAA record is taken to be mail server address even when that address does not accept mail. The NULL MX RR formalizes the existing mechanism by which a domain announces that it accepts no mail, which permits significant operational efficiencies. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-appsawg-nullmx/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-appsawg-nullmx/ballot/ No IPR declarations have been submitted directly on this I-D.
