(BEGIN IANA LAST CALL COMMENTS)
IANA has reviewed draft-klensin-smtp-521code-05. Please report any
inaccuracies and respond to the question below as soon as possible.
IANA's reviewer has the following comments and questions:
QUESTION: In the IANA Considerations section, should "X.10.1" actually be
"X.1.10," or is the document referring to an entry that will be registered by
IANA understands that, upon approval of this document, there is a single action
which IANA must complete.
In the Enumerated Status Codes subregistry of the Simple Mail Transfer Protocol
(SMTP) Enhanced Status Codes Registry located at:
521 will be added to the list of codes associated with the enhanced code entry
for X.3.2. A reference to [ RFC-to-be ] will be added to this registration.
556 will be added to the list of codes associated with the enhanced code entry
for (X.1.10, or an unregistered X.10.1?). A reference to [ RFC-to-be ] will be
added to this registration.
As this document requests registrations in an Expert Review or Specification
Required (see RFC 5226) registry, we will initiate the required Expert Review
via a separate ticket when we have a response to the question above.
NOTE: IANA requests that the URL referenced in footnote 3 of the document be
The actions requested in this document will not be completed until the document
has been approved for publication as an RFC. This message is only to confirm
what actions will be performed.
IANA Request Specialist
(END IANA LAST CALL COMMENTS)
On Thu Mar 05 20:03:04 2015, iesg-secretary(_at_)ietf(_dot_)org wrote:
The IESG has received a request from an individual submitter to consider
the following document:
- 'SMTP 521 and 556 Reply Codes'
<draft-klensin-smtp-521code-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(_at_)ietf(_dot_)org mailing lists by 2015-04-02. Exceptionally, comments
sent to iesg(_at_)ietf(_dot_)org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting.
This memo defines two Simple Mail Transfer Protocol (SMTP) reply
codes, 521 and 556. The 521 code was originally described in an
Experimental RFC in 1995 and is in wide use, but has not previously
been formally incorporated into SMTP. The 556 code was created for
RFC-nullMX. These codes are used to indicate that an Internet host
does not accept incoming mail at all (not just under particular
The file can be obtained via
IESG discussion can be tracked via
No IPR declarations have been submitted directly on this I-D.
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