Hello. I have a quota set for some mailboxes through ispconfig. They got filled up. Now when i manually delete the email inside of them through ssh the quota in ispconfig doesn't change and keeps throwing errors in the log: mailbox full, even though there are NO emails in the email folder /var/vmail/user/Maildir/cur. As a temporary fix i increased the quota and am now experimenting on an email i created. I have found the following: By manually deleting the email in cur dovecot correctly reindexes emails upon client login, yet it doesn't update the used hd space in ispconfig quota field. Ex. 1) Send 2 emails to firstname.lastname@example.org Stat: Mailbox full: 3.0 KB out of 1 MB 2) Connect via client and read email. Stat: Emails are moved from new to cur 3) Now connect via ssh to mail server and delete these sent emails from cur. There are no copies, i checked via grep -lir "content in letter" * and find and ls -R. No copies of letters or their content exist. Not in /tmp, not in /var/spool/mail nowhere! Stat: Mailbox full: 3.0 KB out of 1 MB 4) Send more mail (another 3 KB) repeating steps 1-3. Stat: Mailbox full: 6.0 KB out of 1 MB. How do i get ispconfig to reupdate the used hd space of a email user? I am stumped.