On Thu 07 Dec 2006 at 21:02:47 +0100, Christian Biere wrote:
> If people use the "list reply/reply to list" feature of their
> mailer, there should be no problem. I think many users or
> mailers default to "reply to all/group reply" which gets
> really annoying if you're subscribed to many lists.

There is a "duplicate filter" in the procmailex(5) man page of
mail/procmail.  This is the safer version:

    :0 Whc: msgid.lock
    | formail -D 8192 msgid.cache

    :0 a:
    duplicates

It is very useful.

-Olaf.
-- 
___ Olaf 'Rhialto' Seibert      -- You author it, and I'll reader it.
\X/ rhialto/at/xs4all.nl        -- Cetero censeo "authored" delendum esse.