I'm using procmail to receive email messages and then forward them on to a script for handling. Sometimes this will even mean generating an email (for example, forwarding the message to another user, or answering a query).
Needless to say, I have zero interest in loading up my server with emails from autoresponders or vacation responses, so I'm wondering if there is an easy way to filter out these messages. I am piping these to a script anyway, so I can always roll my own filter in the script, but I'd rather not reinvent the wheel.
I already know I should trash messages with
Precedence: junk or
Precedence: bulk. Can I just filter them like you would any other header in procmail?