[horde] ActiveSync syncs single messages countlessly

[Jens Hellermann]

Dear Horde List members,

I still have problems syncing a very large email account via activesync 
to an Outlook 2013 client. The imap account shows 54.517 email entries 
in Horde Webmail.

To a certain point the sync seems to work normally, but after hours 
Outlook starts repeatedly to fetch the same message again and again.  
(Approximatly a 100 times)

Then it goes over to the next message and does the very same thing 
again. Something in the communication between Outlook and horde seems to 
go wrong.

Has anyone ever heard of a similar problem? I'm going to do some extra 
research tomorrow, but its difficult to go through the log file as it is 
extremely large.

Best regards, Jens.