RFC 3974

"SMTP Operational Experience in Mixed IPv4/v6 Environments", January 2005

Canonical URL:

http://www.rfc-editor.org/rfc/rfc3974.txt
This document is also available in this non-normative format: TXT.PDF.

Status:

INFORMATIONAL

Authors:

M. Nakamura
J. Hagino

Stream:

INDEPENDENT

Please refer here for any errata for this document. To submit a new errata report, go to the main errata page.

Abstract

This document discusses SMTP operational experiences in IPv4/v6 dual stack environments. As IPv6-capable SMTP servers are deployed, it has become apparent that certain configurations of MX records are necessary for stable dual-stack (IPv4 and IPv6) SMTP operation. This document clarifies the existing problems in the transition period between IPv4 SMTP and IPv6 SMTP. It also defines operational requirements for stable IPv4/v6 SMTP operation.

This document does not define any new protocol. This memo provides information for the Internet community.

For the definition of Stream, see RFC 4844.