sieve stopped working and doveadm mailbox list without -s shows less folders then with

[Timo Sirainen]

On 18 Sep 2017, at 20.12, Ralf Becker <rb at egroupware.org <mailto:rb at egroupware.org>> wrote:
> 
> Hi Timo,
> 
> Am 18.09.17 um 12:03 schrieb Timo Sirainen:
>> On 18 Sep 2017, at 12.10, Ralf Becker <rb at egroupware.org <mailto:rb at egroupware.org>
>> <mailto:rb at egroupware.org <mailto:rb at egroupware.org>>> wrote:
>>> 
>>> Am 14.09.17 um 01:07 schrieb Timo Sirainen:
>>>> On 7 Sep 2017, at 17.42, Ralf Becker <rb at egroupware.org <mailto:rb at egroupware.org>
>>>> <mailto:rb at egroupware.org <mailto:rb at egroupware.org>>> wrote:
>>>>> Dovecot 2.2.31 with mailboxes in mdbox format.
>>>>> 
>>>>> Since a couple of days some mailboxes have the problem, that sieve
>>>>> rules
>>>>> moving mails to folders stop working and .sieve.log in mailbox shows:
>>>>> 
>>>>> sieve: info: started log at Sep 07 13:57:17.
>>>>> error:
>>>>> msgid=<20170907155704.EGroupware.S4yThVJRr12WSiJLpKbK0Bz at somedomain.egroupware.de <mailto:20170907155704.EGroupware.S4yThVJRr12WSiJLpKbK0Bz at somedomain.egroupware.de>
>>>>> <mailto:20170907155704.EGroupware.S4yThVJRr12WSiJLpKbK0Bz at somedomain.egroupware.de <mailto:20170907155704.EGroupware.S4yThVJRr12WSiJLpKbK0Bz at somedomain.egroupware.de>>>:
>>>>> failed to store into mailbox 'INBOX/Munser': Mailbox doesn't exist:
>>>>> INBOX/Munser.
>>>>> 
>>>>> When I do a doveadm mailbox list -s -u <user>@<domain> I get all
>>>>> folders
>>>>> incl. the one mentioned above, while doveadm mailbox list without -s
>>>>> shows just
>>>>> user
>>>>> INBOX
>>>> Subscriptions are stored independently from the actual folders. So
>>>> it looks like the subscription file exists and is correct, but
>>>> somehow you've lost all the folders. Do you see the folders in the
>>>> filesystem under user/mailboxes/ directory? 
>>> 
>>> Yes, the folders exist under
>>> /var/dovecot/imap/<domain>/<user>/mdbox/mailboxes/.
>>> Just doveadm mailbox list -u <user>@<domain> (without -s) does only show
>>> INBOX and user.
>>> (I can send you the list of folders via private mail, but I can not post
>>> them on the list.)
>>> 
>>> Anything I can do to get Dovecot to eg. rescan the folders from the
>>> filesystem or any other way to fix that problem?
>>> I have it with a couple of mailboxes, so I believe it's some kind of
>>> systematic problem, nothing the users did.
>> 
>> I can't really think of any reason why it wouldn't simply work.
>> Especially since you're not using v2.2.32, the folder listing is
>> always performed by listing the directories in filesystem, so there's
>> nothing really to resync. What's your doveconf -n? You could try with
>> mailbox_list_index=no if that happens to make any difference, but it
>> shouldn't.
>> 
>> You could also try what "strace -o log -s 100 doveadm mailbox list -u
>> user at domain" shows. Is it opening the correct mailboxes/ directory?
>> Maybe the path is just wrong for some reason (some typo added somewhere)?
> 
> 
> Nope it lstats the correct directories, but does not show them.
> 
> I send you the strace / sysdig output per private mail, as it contains
> private information of that user.

Looks like you have some dovecot-acl and dovecot-acl-list files, so it has to be because Dovecot thinks the ACLs are preventing access to the user. Try deleting dovecot-acl-list to see if the problem is with that. If not, look at the dovecot-acl files and/or "doveadm acl debug -u user at domain <folder that's supposed to exist>" to figure out what's wrong.