How to filter the emails from this list

[Dag-Erling Smørgrav]

Sten Daniel Sørsdal <lists at wm-access.no> writes:
> I prefer to use 'X-Been-There' field as it's always the same if
> e-mails are sent to freebsd-chat at freebsd.org or chat at www.freebsd.org
> or the many variations.

The correct way to sort mail from Mailman lists is by the List-Id
header, which will always contain the canonical list address with "@"
replaced with ".".

DES
-- 
Dag-Erling Smørgrav - des at des.no