Are the mail headers for this list in flux? For a long time, I've been using procmail to filter on "Resent-From: debian-user". In the last day or so some messages are missing that header. So I shifted to filtering on "* TO: debian-user". Problem is, some of the messages are being sent to debian-user via a cc line that is given as "cc" rather than the standard "Cc", so procmail isn't picking them up.
I don't want to rewrite my filter rules every day-- is this going to stabilize? David S.