Resolved Mailbox storage usage displayed incorrectly in Plesk

[TorbHo]

Server operating system version

Ubuntu 20

Plesk version and microupdate number

18.0.73 Update 3

I’m having a strange issue with mailbox storage reporting on my Plesk server.
In the Plesk interface, one of my mailboxes is constantly shown as full — for example, 29 GB / 20 GB used.

When I run the following command via the console:

plesk repair mail info@domain.de

the usage briefly shows the correct value (around 17.5 GB / 20 GB), but after a short time it goes back to showing 29 GB / 20 GB as if it were over quota again.
In addition, the affected users are also receiving automatic quota warning emails from the system, saying that their mailbox is full, even though there’s still plenty of free space.

When I run the command again it is again around 17.5 GB for a short period of time and switches back to 29 GB.

Has anyone seen this behavior before or knows what could cause it?
Everything else on the system seems to work fine — it’s just the mailbox quota display that keeps getting inflated.

Thanks in advance!

 

[Sebahat.hadzhi]

Hi, @TorbHo . The issue you describe is very likely due to corruption of the file /var/qmail/mailnames/example.com/john.doe/Maildir/maildirsize, which is regenerated when you run the repair utility. I cannot, however, confirm what's causing the ongoing reoccurrence of the issue. If you have the option, it will be best to open a ticket with Plesk support for further investigation on your server.

 

[TorbHo]

@Sebahat.hadzhi thank you.
I tried a workaround. I solved the problem by renaming the old mailbox, created a new one and imported mails with Plesk import tool.

 

[lukas-degan]

Same problem here with Plesk version 18.0.74 Update 3. Plesk repair show's no errors. Maybe an Bug?

 

[Sebahat.hadzhi]

Hi, @lukas-degan . The behavior was not recognized as a bug. In most cases it appears due to corruption in the aforementioned file. Did you try to run the repair utility specifically for the email account(s) the issue appears for, please:

plesk repair mail john_doe@example.com

 

[lukas-degan]

Hi, @lukas-degan . The behavior was not recognized as a bug. In most cases it appears due to corruption in the aforementioned file. Did you try to run the repair utility specifically for the email account(s) the issue appears for, please:

plesk repair mail john_doe@example.com

Yes, but i see the same behavior than @TorbHo. The usage ist correct for a few minutes and then go back to wrong one.

 

[TorbHo]

@lukas-degan I had exactly the same issue with other mail accounts, too. That’s why I do believe it’s a bug, but I’m missing information on how it can occur.

As a workaround, the only thing I can suggest is renaming the mailbox, creating a new one with the old password, and transferring the emails via the Plesk Mail Importer. This has resolved the issue so far.

It might also be sufficient to simply rename the mailbox and then rename it back again. I now suspect that it’s an issue with the Plesk database. Renaming the mailbox also seems to work for some colleagues, but I haven’t been able to verify this yet.