[imp] ActiveSync 2.6.1 problem

[lst_hoe02 at kwsoft.de]

Zitat von lst_hoe02 at kwsoft.de:

> Zitat von Michael J Rubinsky <mrubinsk at horde.org>:
>>
>> What IMAP server is being used? It might be an issue with not  
>> having CONDSTORE/MODSEQ available that needs to be looked at (there  
>> was code prior to 2.6.1 that was incorrect in how we were calling  
>> some imap library methods when CONDSTORE is not available and this  
>> was changed in 2.6.1).
>
> This time it is Dovecot 2.0.19 as shipped with Ubuntu 12.04 LTS, the  
> other server is Cyrus 2.4.17 which you have tested recently as  
> working...
> But as said after re-pairing it works again, it is only troublesome  
> to update with existing ActiveSync user base :-(
>

After some more tests it looks like the problem is more serious. As  
said after full-resync and enable/disable Push it looks like it were  
working, but after closer inspection the following problem arises.
After start of the Phone all looks normal. If for example a new mail  
arrives the Phone show new mail has arrived as it should with working  
Push. But from that point on it is sending short requests (no IMAP  
login!) to the server with 1-3 seconds in between on and on so the  
Phone battery is drained at alarmingly pace.
A second ActiveSync account to an older Horde_ActvieSync (2.5.6)  
doesn't show this.

System:
Dovecot 2.0.19 (Ubuntu 12.04)
Horde/IMP latest

Phone:
iPhone 4S with iOS 6.1.3

Any hints how to debug this?

Regards

Andreas