[Dovecot] IMAP Clients can not see 3rd tier nested IMAP directories

[jjs87 at cornell.edu]

On 12/7/2010 11:02 AM, dovecot wrote:
> On 07-12-10 16:37, jjs87 at cornell.edu wrote:
>> I have a very bizarre problem that I hope someone can help me with. I
>> am not sure if this is a Dovecot problem, or IMAP client problem.
>>
>> I recently used Transend's Migrator to move mail from Exchange 2007 to
>> my Dovecot 1.0.7 server. The program seems to have moved the nested
>> IMAP dirs properly as seen below in a directory listing of the maildir
>> dir. The nested dirs have indexes, cur, new dirs as expected.
>>
>> However, when the account is viewed in Windows Thunderbird 3.1.6 or
>> Outlook 2010 the 3rd tier dirs are not seen, nor can they be
>> subscribed to. On a whim, I decided to try Apple Mail 4.3 to view the
>> account and all the IMAP dirs can be seen and accessed as expected.
>>
>> Any idea what is going on?  Is this somehow an IMAP client problem
>> (bug) or an issue with Dovecot and these clients?
>>
>>
>> Listing of the Maildir dir:
>>
>> [root Maildir]# ls -al
>> total 92
>> drwx------ 17 andrew andrew  4096 Dec  6 17:06 .
>> drwx------  9 andrew andrew  4096 Dec  6 15:58 ..
>> drwx------  5 andrew andrew  4096 Dec  6 16:31 .mailbox
>> drwx------  5 andrew andrew  4096 Dec  6 16:31 .mailbox.mail
>> drwx------  5 andrew andrew  4096 Dec  6 16:48 .mailbox.mail.colleagues
>> drwx------  5 andrew andrew  4096 Dec  6 17:02
>> .mailbox.mail.colleagues.amy
>> drwx------  5 andrew andrew  4096 Dec  6 16:48
>> .mailbox.mail.colleagues.aslan
>> drwx------  2 andrew andrew  4096 Dec  6 16:31 cur
>> -rw-------  1 andrew andrew   144 Dec  6 16:31 dovecot.index
>> -rw-------  1 andrew andrew 10272 Dec  6 16:31 dovecot.index.cache
>> -rw-------  1 andrew andrew   128 Dec  6 16:31 dovecot.index.log
>> drwx------  2 andrew andrew  4096 Dec  6 16:31 new
>> drwx------  5 andrew andrew  4096 Dec  6 16:53 .Sent Items
>> -rw-------  1 andrew andrew    32 Dec  6 17:06 subscriptions
>> drwx------  2 andrew andrew  4096 Dec  6 16:31 tmp
>> drwx------  5 andrew andrew  4096 Dec  6 16:32 .Trash
>>
>>
>> PROBLEM:
>>
>> When viewed in Thunderbird 3.1.6 or Outlook 2010:
>>
>> These nested dirs are seen:
>> ..mailbox
>> ....mail
>>
>> These nested dirs are NOT seen or can be subscribed:
>> ......colleagues
>> ........amy
>> ........aslan
>>
>>
>> OBSERVATIONS:
>>
>> When viewed in Apple Mail 4.3, all dirs are seen correctly.
>>
>> Thank you, I appreciate any and all replies, comments, questions, and
>> suggestions.
>> Jason
>>
>>
> seems to work here:
>
> i just create a folder 'test', a subfolder 'test', etc, etc
>
> opensuse:/home/luuk/Maildir # ls -laR | grep test
> drwx------  5 luuk users    4096 2010-12-07 16:59 .test
> drwx------  5 luuk users    4096 2010-12-07 17:00 .test.test
> drwx------  5 luuk users    4096 2010-12-07 16:59 .test.test.test
> drwx------  5 luuk users    4096 2010-12-07 17:00 .test.test.test.test
> ./.test:
> ./.test/cur:
> ./.test/new:
> ./.test/tmp:
> ./.test.test:
> ./.test.test/cur:
> ./.test.test/new:
> ./.test.test/tmp:
> ./.test.test.test:
> ./.test.test.test/cur:
> ./.test.test.test/new:
> ./.test.test.test/tmp:
> ./.test.test.test.test:
> ./.test.test.test.test/cur:
> ./.test.test.test.test/new:
> ./.test.test.test.test/tmp:
> opensuse:/home/luuk/Maildir #

Thanks for the note. I should have mentioned that manually creating 
nested folders from within TB or Outlook works just fine.
-Jason