We have a postfix installation with a couple of virtual domains each with virtual users. These domains and users are mapped using a mysql database. I have been until now tracking bounces by parsing the postfix log file. I suspect there must be better and more efficient ways of doing this. I thought of three but I am not sure what is best:

1. Write a Postfix content filter that logs the bounce and throws away the mail
2. Use procmail - but I am not sure how procmail would work with virtual users who have no $HOME defined
3. Write a script that POPs mail from mailboxes; parses and logs them and deletes the bounced email

I would appreciate advise on which would be best from a maintenance point of view and efficient from conserving server resources point of view. Thanks