Hi
OK, its requires skills and of course some technical magic to configure something as complex as a mailclient correctly. But for all those who are unwilling or unable to fullfill this job on their own there *is* in fact a solution to this problem. It is (astoundingly enough) possible to use more than one email account for exchangeing electronic mail.
You don't need multiple mail accounts. There is "Precedence: {bulk|list}" for a reason. Have a look into your wiki (or procmailex(5) for everyone else), there's an autoresponder which does not reply to properly configured mailing lists.
Daniel