Recently, I've got quota error, but I didn't setup Dovecot quotas.
I'm searching a way to get rid of this issue, preventing me to deliver mails correctly.

Context

I've got error when I'm trying to send mails.
The sieve rules are set using rainloop, and symlinked to domain.tld/user/ .dovecot.sieve.

Your Environment

• Amount of RAM available: 16GB
• Mailserver version used: latest (this one at the moment : "Created": "2020-04-30T15:33:13.507129492Z")
• Docker version used: Docker version 19.03.8-ce, build afacb8b7f0
• Any relevant stack traces ("Full trace" preferred):
  Error: Failed to get quota resource STORAGE: quota-count: Couldn't get size of mailbox dovecot.sieve: stat(/var/mail/domain.tld/user/.dovecot.sieve/tmp) failed: Not a directory