RFC 3974 · INFORMATIONAL · 2005

SMTP Operational Experience in Mixed IPv4/v6 Environments

Overview

RFC 3974, “SMTP Operational Experience in Mixed IPv4/v6 Environments”, is an Informational document published in January 2005 by M. Nakamura, J. Hagino. The canonical text is published by the RFC Editor.

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.

Abstract as published in the RFC, via rfc-editor.org.

What “Informational” means

Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.

Read this RFC

The canonical text of RFC 3974 is hosted at rfc-editor.org. Available in TXT,HTML.

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