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Mailing List Manager (MLM) Transformations

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
Author Alessandro Vesely
Last updated 2023-03-27 (Latest revision 2022-09-14)
Replaces draft-dmarc-vesely-mlm-transform
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active.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 proposes three methods to get rid of munged From: lines. The methods vary requirements, complexity and success rates. Method one considers how MLMs can avoid From: munging for specific users. Methods two uses the Author: header field while method three tries to revert MLM transformations, in order to restore the original From: line after reception.


Alessandro Vesely

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