cPanel mail quota mismatch

cPanel decided that they want to use maildir format for it's mailboxes and started converting all mboxes to maildir. There are 100's of issues (I love these issues and work arounds :)) involved with the conversion, like failing to convert some large mboxes of more than 1GB+, quotas mismatch and so on and on.. But I must agree, that they did a pretty good job with the /scripts/convert2maildir script which uses /usr/local/cpanel/3rdparty/mb2md/mb2md . Actual project page is at http://batleth.sapienti-sat.org/projects/mb2md/.

When customers use the Show Disk Space used cPanel actually reads the quota from a filename inside the mail directory usually located at /home/username/mail/domainname.com/emailaccount/maildirsize and prints out in a -h format (human readable format). After the conversion, around 50% of the accounts will show the wrong quota usage. The following command fixes the issue for you and let cPanel recalculate the disk usage.

find /home -name "maildirsize" -exec rm -f {} \;

For those of who like xargs use,

find /home -name "maildirsize" | xargs rm -f

or even

find /home -name "maildirsize" -delete

Replace /home with /home/username/mail for dealing with one particular cPanel account.