Hi all,

Please forgive the cross post, I am not sure what the best forum would be given the nature of my problem.

I have a mailplatform with thousands of user accounts across multiple virtual domains. I am using postfix, amavisd-new (spam/virus scanning), and maildrop (for quotas) to receive and deliver email to the users inbox. And I am using a combination of courier-imap (with imap and pop support) with squirrelmail for users to retrieve their email.

This configuration works exactly as expected, however in the cases where email is inbound to a user that is over their mailbox quota, the email has to flow through postfix, amavisd-new and maildrop before the bounce is generated. A significant amount of the time, the reply-to address is invalid, or I cannot connect to the remote mailserver.

I would like to reject email to users that are overquota immediately in postfix before data is passed with a reject_recipient map (or something similiar). I wrote a perl script to parse the maildirsize and flag the overquota users, from this I have been generating a custom map with the overquota users and the reject statement.

This was working great until I noticed that when the user cleans out their maildir using pop3 or via the webmail, the maildirsize file is not updated, and my script never knows to unflag the user. This has left me completely stumped.

How do I effeciently check the maildirsize for thousands of users, and accurately mark when the maildir has been cleaned out?

TIA, Max

"The similarities of sysadmins and drug dealers: both measure stuff in K's, and both have users."