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Mailing List Manager (MLM) Transformations

Document Type Replaced Internet-Draft (individual)
Expired & archived
Author Alessandro Vesely
Last updated 2020-11-16
Replaced by draft-vesely-dmarc-mlm-transform
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-vesely-dmarc-mlm-transform
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This Internet-Draft is no longer active.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 widespread adoption of Domain-based Message Authentication, Reporting, and Conformance (DMARC) led Mailing List Managers (MLM) to rewrite the From: header field as a workaround. This document describes cases where it is possible to revert MLM transformations and hence verify DomainKeys Identified Mail (DKIM) signatures that were applied at submission time. For reliable results, some compliance is required of all agents involved, author domain signers, MLMs, forwarders, and final recipients. MLM transformation reversion reduces the DMARC's effects on indirect mail flows.


Alessandro Vesely

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