Is there an option to send "away messages" based on sender address? For example - I am getting notification e-mails from some daemons and of course there is no need to send back away messages. It would be great if there was a chance to create sender lists of never-send-back-away-messages and/or always-send-back-away-messages. What do you think of it? I hope it is descripted clearly (English is not my native).