[Mailman-Users] DomainKey problem with Mailman

Mark Sapiro mark at msapiro.net
Thu Feb 12 18:56:12 CET 2009

Lindsay Haisley wrote:
>So, since Mailman is the "agent responsible for the actual transmission
>of the message", re-writing the Sender header doesn't appear to be a
>violation of the spec, but there is a problem here.  It appears that
>Mailman _should_ either offer the option of preserving the original
>poster's Sender header, or should nuke the original poster's
>DomainKey-Signature: header.

At one point, Mailman unconditionally removed DomainKey-Signature:,
DKIM-Signature: and Authentication-Results: headers from outgoing
mail. As a result of a discussion on Mailman-Developers [1], this
behavior was made conditional based on the setting of
REMOVE_DKIM_HEADERS which defaults to No. If you want them removed, put


in mm_cfg.py.

et. seq.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

More information about the Mailman-Users mailing list