[horde] Horde Activesync with Outlook 2013/2016: duplicate folders on folder creation

[Michael J Rubinsky]

Quoting Hendrik Noack <hn at axxedia-it.de>:

> Hello everbody,
>
>
>
> I did not find anything on the internet on that topic, so I hope maybe
> someone has seen this behaviour before.
>
>
>
> We are using Debian 8 with Dovecot, Exim and Horde on top. The Horde
> installation is up to date. Our clients are using Outlook 2013/2016 to
> connect via Horde activesync.
>
> We also have a bunch of iOS and Android devices.
>
>
>
> It’s not always happening, but too often to be just a rare bug. When an
> Outlook client creates a new mail folder, the folder is created, then a sync
> against horde is started and the very same folder is immediately sync‘ed
> back as another new folder. The client now has: folder and folder [1] in the
> database. Right after the appearances of the duplicate folder a new sync is
> started that clears out all mails, contacts and appointments from that
> client, so that Outlook appears to be empty. A reset in activesync for that
> client on the server side does not clear this problem, I have to delete the
> local .ost cache for that client. The next sync will then bring back all
> mails, contacts and appointment. The duplicate folder is also gone, as it
> was never duplicated on the server side.
>
>
>
> Creating a folder in IMP always works as it should, I have never seen
> duplicates in Outlook when I created the folder in IMP.
>
>
>
> My guess is, that there must be something going terribly wrong sometimes
> when Outlook tries to create a new folder via activesync. Or maybe this a
> problem with my Dovecot configuraiton, but like I said, the duplicates never
> reach the server.

Please provide a sync log for further assistance.



> Any ideas would be much appreciated.
>
>
>
>
>
> Mit freundlichen Grüßen / Best regards
>
> Hendrik Noack
>
>
>
> --
> Axxedia IT GmbH
>
> Schwabstr. 30
> 71106 Magstadt
>
> Tel +49 7159 4979763
> Fax +49 7159 4979775
>
> Mail hn at axxedia-it.de <mailto:hn at axxedia-it.de>
>
> Sitz der Gesellschaft: Schwabstr. 30, 71106 Magstadt
> Geschäftsführer: Hendrik Noack . Amtsgericht: Stuttgart HRB 727296



-- 
mike
The Horde Project
http://www.horde.org
https://www.facebook.com/hordeproject
https://www.twitter.com/hordeproject
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2007 bytes
Desc: S/MIME Signature
URL: <https://lists.horde.org/archives/horde/attachments/20161111/95c29217/attachment.bin>