procmail filter for mailinglist

[Derek Broughton]

Siggy Brentrup wrote:

> On Tue, Jul 14, 2009 at 01:42 -0400, Jay Daniels wrote:
>> I need an automatic procmail filter for list.  This does not seem to
>> work - for this list anyway.  What am I missing?
>> 
>> :0
>> * ^X-BeenThere_.*ubuntu-users@
>                 ^
>                 | sorry, I don't recall '_' being a metacharacter
> 
> Btw, I'm using Sender: for mailman lists too.

Wouldn't it make more sense to use one of the "List-" headers, too?
-- 
derek