[horde] Horde4 ActiveSync with Nokia N900

[Yves Bilgeri]

Tried to use my Nokia N900 (latest Maemo 1.3) with Horde4 ActiveSync. 
The setup on the phone went well but when it tries to sync it ends in 
"Error in Exchange server". In the Horde log files there is:

2011-03-30T23:01:28+02:00 NOTICE: HORDE [imp] Login success for 
test.user at example.net (Horde user test.user at example.net) 
[194.230.155.27] to {localhost:143 [imap]} [pid 24682 on line 199 of 
"/var/www/horde4/imp/lib/Auth.php"]
2011-03-30T23:01:29+02:00 ERR: HORDE [horde] Missing required 
parameters. [pid 24682 on line 56 of 
"/var/www/horde4/pear/php/Horde/Rpc/ActiveSync.php"]
2011-03-30T23:01:29+02:00 EMERG: HORDE [horde] Your device requested the 
ActiveSync URL wihtout required parameters. [pid 24682 on line 58 of 
"/var/www/horde4/pear/php/Horde/Rpc/ActiveSync.php"]

And the Apache log file:
194.230.155.27 - test.user at example.net [30/Mar/2011:23:01:28 +0200] 
"OPTIONS /Microsoft-Server-ActiveSync HTTP/1.1" 200 - "-" "N900/1.1"
194.230.155.27 - test.user at example.net [30/Mar/2011:23:01:29 +0200] 
"POST 
/Microsoft-Server-ActiveSync?Cmd=FolderSync&DeviceId=356938031943765&DeviceType=SmartPhone 
HTTP/1.1" 200 282 "-" "N900/1.1"
194.230.155.27 - test.user at example.net [30/Mar/2011:23:01:32 +0200] 
"POST 
/Microsoft-Server-ActiveSync?Cmd=FolderSync&DeviceId=356938031943765&DeviceType=SmartPhone 
HTTP/1.1" 200 282 "-" "N900/1.1"

I also took a network dump, but nothing of interest in there, I think.

Before I also used the N900 with Z-Push and the IMAP-Backend and there 
it worked very well with syncing mails.

Pleas tell me, if I can provide you more information to solve the problem.

Thanks, Yves