Mailbox quota notification is not working

"Mailbox quota notification" notifications have stopped working. Does anyone have any tips for me on how to solve this please? Which log to look in? Thank you.

I tried this:

[root@server~]# php /usr/local/ispconfig/server/cron_debug.php --cronjob=100-mailbox_stats.inc.php
finished cron debug.
[root@server~]#

It didn't tell me anything.

 

What do you mean? I use SMTP. Notifications is set for daily reporting.

 

Do you mean this?

 

I don't use this function but while looking at this screenshot I think you need to enable "Use SMTP to send system mails:" checkbox in order to use an external SMTP server, don't you?

 

This is not related, a few hours before the screenshot I tried to turn off SMTP to see if it would work at least through some PHP mail() function, but nothing. It was just a temporary experiment. The next day after the screenshot I turned it back on.

I also wondered if it would be worth trying update --force to see if that would help fix the problem.

 

I don't know exactly what you mean, but the SMTP mailbox as such works perfectly. I use it in my mail client. I send and receive mail.

ISpconfig error/warning log is empty.