Subject: [tags] Considered Harmful

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Last updated 2004-11-18
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Various mailing lists modify the Subject: header field of messages sent to the list to contain a kind of identifier enclosed in square brackets. Every now and then this 'feature' is also requested for the main IETF list. This document collects pros and cons of this approach, tries to identify the real issue and will, in a later stage, try to give a recommendation.


Peter Koch (

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