RFC 5429 · PROPOSED STANDARD · 2009

Sieve Email Filtering: Reject and Extended Reject Extensions

Overview

RFC 5429, “Sieve Email Filtering: Reject and Extended Reject Extensions”, is a Proposed Standard document published in March 2009 by A. Stone. It updates RFC 5228. It obsoletes RFC 3028. The canonical text is published by the RFC Editor.

Abstract

This memo updates the definition of the Sieve mail filtering language "reject" extension, originally defined in RFC 3028.

A "Joe-job" is a spam run forged to appear as though it came from an innocent party, who is then generally flooded by automated bounces, Message Disposition Notifications (MDNs), and personal messages with complaints. The original Sieve "reject" action defined in RFC 3028 required use of MDNs for rejecting messages, thus contributing to the flood of Joe-job spam to victims of Joe-jobs.

This memo updates the definition of the "reject" action to allow messages to be refused during the SMTP transaction, and defines the "ereject" action to require messages to be refused during the SMTP transaction, if possible.

The "ereject" action is intended to replace the "reject" action wherever possible. The "ereject" action is similar to "reject", but will always favor protocol-level message rejection. [STANDARDS-TRACK]

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

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 5429 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 3028
This RFC updates
RFC 5228
Other RFCs from 2009

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