The usage of mailbox space is different in Plesk and on disk

Symptoms

The usage of mailbox space differs between Plesk and mailbox directory on a server.

In Plesk > Subscriptions > example.com > Mail tab mail Usage shows 100MB.

But on the server the mailbox directory size is:

# du -sch /var/qmail/mailnames/example.com
350M     /var/qmail/mailnames/example.com
350M     total

Refreshing mail usage by clicking Refresh Usage Stats at Plesk > Subscriptions > example.com > "Mail" tab does not solve the issue.

Cause

This is Plesk bug with ID # PPPM-5114 that is planned to be fixed in future Plesk updates.

Resolution

Workaround for only Plesk Onyx

1. Backup /usr/lib64/plesk-9.0/mail_mailbox_restore_backup :

   # cp /usr/lib64/plesk-9.0/mail_mailbox_restore /usr/lib64/plesk-9.0/mail_mailbox_restore_backup
   

2. Download the custom fix

   # wget https://support.plesk.com/hc/article_attachments/115004356825/mail_mailbox_restore.zip
   # unzip mail_mailbox_restore.zip
   

3. Replace unzipped fix:

   # cp mail_mailbox_restore /usr/lib64/plesk-9.0/
   

4. Reconfigure mail:

   # /usr/lib64/plesk-9.0/mail_restore
   

5. Execute daily maitenance task:

   # /usr/local/psa/bin/sw-engine-pleskrun /usr/local/psa/admin/plib/DailyMaintainance/script.php MailUsage
   

6. Refresh mailbox usage by clicking Refresh Usage Stats at Plesk > Subscriptions > "Mail" tab .

Hotfix for Plesk 12.5 on CentOS 7.

1. Download the fix for CentOS:

   # mkdir /root/tmp
   # wget -P /root/tmp https://support.plesk.com/hc/article_attachments/115004544529/mailbox-usage-pp12.5.30-cos7x64-postfix.tar.gz
   

2. Extract the fix:

   # tar -xvzf /root/tmp/mailbox-usage-pp12.5.30-cos7x64-postfix.tar.gz
   

3. Back up original files:

   # mv /usr/local/psa/admin/sbin/mailbox_usage /usr/local/psa/admin/sbin/mailbox_usage.bak
   
   # mv /usr/local/psa/admin/sbin/mailmng-core /usr/local/psa/admin/sbin/mailmng-core.bak
   
   # mv /usr/local/psa/handlers/hooks/check-quota /usr/local/psa/handlers/hooks/check-quota.bak
   
   # mv /usr/lib64/plesk-9.0/mail_mailbox_restore /usr/lib64/plesk-9.0/mail_mailbox_restore.bak
   

4. Replace the original files with fixed ones:

   # cp /root/tmp/usr/lib64/plesk-9.0/mail_mailbox_restore /usr/local/psa/admin/sbin/mailbox_usage
   
   # cp /root/tmp/usr/local/psa/admin/sbin/mailmng-core /usr/local/psa/admin/sbin/mailmng-core
   
   # cp /root/tmp/usr/local/psa/handlers/hooks/check-quota /usr/local/psa/handlers/hooks/check-quota
   
   # cp /root/tmp/usr/lib64/plesk-9.0/mail_mailbox_restore /usr/lib64/plesk-9.0/mail_mailbox_restore
   

5. Run the Daily Maintenance script to recalculate mailbox usage:

   # /usr/local/psa/bin/sw-engine-pleskrun /usr/local/psa/admin/plib/DailyMaintainance/script.php MailUsage
   

6. Refresh mailbox usage by clicking Refresh Usage Stats at Plesk > Subscriptions > "Mail" tab .

Hotfix for Plesk 12.5 on Debian 7.

1. Download the fix for Debian:
   

   # wget -P /root/ https://support.plesk.com/hc/en-us/article_attachments/115002647765/PPPM-5114-debian.tar

2. . Unpack the archive:
   

   # tar -C /root/ -xvf PPPM-5114-debian.tar

3. Backup the original file:
   

   # cp -a /opt/psa/admin/sbin/mailmng-server /opt/psa/admin/sbin/mailmng-server.`date +%F.%s`.backup

4. Copy fixed file to the directory /opt/psa/admin/sbin/ replacing the original file:
   

   # cp -a  /root/mailmng-server /opt/psa/admin/sbin/

5. Set required ownership and permissions for the file:
   

   # chown root:root /opt/psa/admin/sbin//mailmng-server
   # chmod 0755 /opt/psa/admin/sbin//mailmng-server
   # stat /opt/psa/admin/sbin/mailmng-server
     File: '/opt/psa/admin/sbin/mailmng-server'
     Size: 649592          Blocks: 1272       IO Block: 4096   regular file
   Device: 5560b621h/1432401441d   Inode: 145000      Links: 1
   Access: (0750/-rwxr-x---)  Uid: (    0/    root)   Gid: (    0/    root)

6. Run the Daily Maintenance script to recalculate mailbox usage:
   

   # /usr/local/psa/bin/sw-engine-pleskrun /usr/local/psa/admin/plib/DailyMaintainance/script.php MailUsage

7. Refresh mailbox usage by clicking Refresh Usage Stats at Plesk > Subscriptions > "Mail" tab .