dovecot - Apr 2015 - Problem: mail moved by thunderbird script is invisible to mail clients, but in cur directory

Over the last year I've had a script moving old mail (120 days) into my 
annual archive folder.  This is the first year I've done this with Dovecot, 
previously it was running against Cyrus.

There's nothing particularly clever: a few conditions to match, then
"move
message to" the appropriate archive folder.  There's one for every year
from 2000 to 2015.  2015 is just barely ahead of need.  2014 has about a 
year's mail in the cur directory.

The 2000-2013 folders were filled by Cyrus and were migrated over using 
IMAP Migrate.  They're fine, and read normally.

The 2014 layout looks normal to me
# ls
cur                     dovecot-uidlist         dovecot.index.cache 
dovecot.index.log.2     new
dovecot-keywords        dovecot.index           dovecot.index.log 
maildirfolder           tmp


Permissions are the same as every other folder, as is owner:
drw-r-----   2 vmail  vmail   9.6K Apr 12 21:13 cur

and
#  ls | wc -l
    9822


I've checked with Thunderbird, Mulberry, Claws, and Sylpheed - none can 
read the directory.

The files look normal: 2014/cur
1426411329.M123928P26360.host.domain.com,S=3523,W=3591:2,R

More or less the same as a working directory: 2013/cur
1405500734.M958596P27867.host.domain.com,S=794,W=819:2,RS

I've run

# doveadm force-resync -u user .archives.2014

and nothing changed.

I'm at a bit of a loss since no client can read them, something like moving 
them to another folder and back is a little complicated.  Any hints?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Tue, 14 Apr 2015, David Gessel wrote:
> There's nothing particularly clever: a few conditions to match, then
"move
> message to" the appropriate archive folder.  There's one for every
year from
> 2000 to 2015.  2015 is just barely ahead of need.  2014 has about a
year's
> mail in the cur directory.
>
> The 2000-2013 folders were filled by Cyrus and were migrated over using
IMAP
> Migrate.  They're fine, and read normally.
>
> The 2014 layout looks normal to me
> # ls
> cur                     dovecot-uidlist         dovecot.index.cache 
> dovecot.index.log.2     new
> dovecot-keywords        dovecot.index           dovecot.index.log 
> maildirfolder           tmp
>
> Permissions are the same as every other folder, as is owner:
> drw-r-----   2 vmail  vmail   9.6K Apr 12 21:13 cur
>
> I've checked with Thunderbird, Mulberry, Claws, and Sylpheed - none can
read
> the directory.
What does Dovecot log?


- -- 
Steffen Kaiser
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-------- Original Message --------
Subject: Re: Problem: mail moved by thunderbird script is invisible to mail
clients, but in cur directory
From: Steffen Kaiser <skdovecot at smail.inf.fh-brs.de>
To: David Gessel <gessel at blackrosetech.com>
Date: Tue Apr 14 2015 09:07:54 GMT+0300 (Arabic Standard Time)
> On Tue, 14 Apr 2015, David Gessel wrote:
> 
>> There's nothing particularly clever: a few conditions to match,
then "move message to" the appropriate archive folder.  There's
one for every year from 2000 to 2015.  2015 is just barely ahead of need.  2014
has about a year's mail in the cur directory.
> 
>> The 2000-2013 folders were filled by Cyrus and were migrated over using
IMAP Migrate.  They're fine, and read normally.
> 
>> The 2014 layout looks normal to me
>> # ls
>> cur                     dovecot-uidlist         dovecot.index.cache
dovecot.index.log.2     new
>> dovecot-keywords        dovecot.index           dovecot.index.log
maildirfolder           tmp
> 
>> Permissions are the same as every other folder, as is owner:
>> drw-r-----   2 vmail  vmail   9.6K Apr 12 21:13 cur
> 
>> I've checked with Thunderbird, Mulberry, Claws, and Sylpheed - none
can read the directory.
> 
> What does Dovecot log?
> 
> 
> -- Steffen Kaiser

Nothing useful as I tried to list it, but just to make sure, I tried copying a
new file in and got the immensely useful:

Apr 14 09:48:15 imap(user at domain): Error:
rename(/mail/domain/user//.archives.2014/tmp/1429030095.M674819P29788.shiofuki,
/mail/domain/user//.archives.2014/cur/1405004806.M943913P44906.shiofuki.domain,S=36977,W=37882:2,S)
failed: Permission denied

And checking again I see the above permissions are accurate but incorrect.  640
isn't right for cur, it should be 740.

Curiously, this directory was created by t-bird, but a simple

# chmod 740 cur 

and the folder opens correctly.  Thank you, Steffen, for the help!

-David