Permission denied UNIX perms appear ok (ACL/MAC wrong?))

[Erwan David]

Le 20/08/2022 à 18:23, Austin Witmer a écrit :
> See below.
>
>> On Aug 20, 2022, at 9:56 AM, Remo Mattei <rm at rm.ht> wrote:
>>
>> Try ls -laZ
>>
>>> Il giorno 20 ago 2022, alle ore 08:08, Erwan David <erwan at rail.eu.org> ha scritto:
>>>
>>> Le 20/08/2022 à 16:52, Austin Witmer a écrit :
>>>> Hello all!
>>>>
>>>> Recently I upgraded my mail server to Ubuntu 22.04 LTS and ever since then I am periodically getting some dovecot errors like the below in my mail log. As far as I can tell, my unix perms are just fine. What is ACL/MAC?
>>>>
>>>> Aug 20 14:41:58 mail dovecot: imap(user at domain.com)<56316><1NieGKPmuOdKwxVI>: Error: Mailbox INBOX: stat(/mnt/volume1/mailserver/plain/maildir/domain.com/user/dovecot.index.log <http://domain.com/user/dovecot.index.log>) failed: Permission denied (euid=1000(austin) egid=1000(austin) UNIX perms appear ok (ACL/MAC wrong?))
>>>>
>>>> And here is the listing showing the permissions for that file.
>>>>
>>>> *austin at mail*:*~*$ ls -la /mnt/volume1/mailserver/plain/maildir/domain.com/user/dovecot.index.log <http://domain.com/user/dovecot.index.log>
>>>> -rwxrwxr-- 1 austin austin 15796 Aug 20 14:41 */mnt/volume1/mailserver/plain/maildir/domain.com/user/dovecot.index.log <http://domain.com/user/dovecot.index.log>*
>>>>
>>>> What in the world is causing these errors, and what can I do about them?
>>>>
>>>> Thanks in advance!
>>>>
>>>> Austin Witmer
>>> Did you check wether your linux distribution uses SeLINUX or Apparmor ? In that case you would have to check their policy to give dovecot access to this directory.
>>>
>>>
> No, I’m not familiar with SeLinux or Apparmor. Tell me what I should do or check.
>
> Thanks!
>
> Austin Witmer
>
>
I'm not sure. apparmor logs in kern.log

You can try a grep mailserver/plain/maildir/domain.com /var/log/*.log 
for a start