SMTP 521 Reply Code
draft-klensin-rfc1846bis-00

Document Type Replaced Internet-Draft (individual)
Author John Klensin 
Last updated 2014-09-17 (latest revision 2014-08-11)
Replaced by RFC 7504
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This Internet-Draft is no longer active.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-klensin-rfc1846bis-00.txt

Abstract

This memo defines a new Simple Mail Transfer Protocol (SMTP) reply code, 521, which one may use to indicate that an Internet host does not accept incoming mail. It is a standards track replacement for the earlier, experimental, RFC 1846 without any substantive changes.

Authors

John Klensin (john-ietf@jck.com)

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