RFC 5429

Sieve Email Filtering: Reject and Extended Reject Extensions, March 2009

Canonical URL:
File formats:
icon for text file icon for PDF icon for HTML
RFC 3028
RFC 5228
A. Stone, Ed.
sieve (app)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC5429

Discuss this RFC: Send questions or comments to sieve@ietf.org

Other actions: View Errata  |  Submit Errata  |  Find IPR Disclosures from the IETF


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]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.

Download PDF Reader