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SMTP target host selection in Mixed IPv4/IPv6 environments

Document Type Expired Internet-Draft (individual)
Authors Franck Martin , Alec Peterson
Last updated 2014-06-08 (Latest revision 2013-12-05)
Stream (None)
Intended RFC status (None)
Expired & archived
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Simple Mail Transfer Protocol (SMTP) is defined in [RFC5321]. Section 5 of that document describes the process of host selection. While locating the target host in IPv4 is well defined, this process is unclear for sytems in IPv4 and IPv6 environemts. This specification extends [RFC5321] to provide a standard way of selecting the target host in mixed environements.


Franck Martin
Alec Peterson

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