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

[Austin Witmer]

My mail storage is located on a block storage volume connected to my droplet in digital ocean.

Austin Witmer

> On Aug 20, 2022, at 11:15 AM, spi <spi at nurfuerspam.de> wrote:
> 
> 
>> Am 20.08.22 um 16:52 schrieb Austin Witmer:
>> 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
> 
> 
> Do you use any ACLs? Is this just a block device mounted or do you use
> any network file sharing like nfs?
> 
> ACLs you can check by 'getfacl foo'.
> 
> --
> Cheers
> spi