Probleme mit Free/Busy Informationen in Outlook Anywhere

Hallo zusammen,
habe nun zwei Tage im Internet sämtliche Foren durchsucht und finde keine Lösung.
Wir haben einen Exchange 2007 intern und per OWA funktioniert alles einwandfrei. Für OWA ist ein offizelles Zertifikat von GlobalSign installiert, geht auch.
Nur bei Outlook Anywhere habe ich folgendes Problem:
Das Pstfach lässt sich einwandfrei einrichten und funktioniert auch, Freigegebene Kalender anderer werden auch angezeigt.
Aber wenn ich Termine planen will oder Räume buchen, sind die Frei/Gebucht informationen nicht abrufbar.
Desweiterem kommt, wenn man den AbwesenheitsAssitenten verwenden möchte immer die Meldung, dass der Server nicht zur Verfügung steht. Dies hängt mit Sicherheit auch damit zusammen, vermute ich.

Hat jemand eine Idee, für die ich ein Lebenlang dankbar wäre?
Danke schonmal!
M.C.

Hallo Normbert,
den Test hatte ich gestern auch schon durchgeführt und nichts entdeckt.
Habe es jetzt nochmal durchlaufen lassen.
Finde ncihts ungewöhnliches, vielleicht siehst Du mehr wie ich (vier Augen sind besser wie zwei).
Hier das ERgebnis:
Testing RPC/HTTP connectivity
RPC/HTTP test completed successfully.
Test Steps
Attempting to resolve the host name mail.post-dwro.de in DNS.
Host successfully resolved
Additional Details
IP(s) returned: 62.134.40.10

Testing TCP Port 443 on host mail.post-dwro.de to ensure it is listening and open.
The port was opened successfully.
Testing SSL Certificate for validity.
The certificate passed all validation requirements.
Test Steps
Validating certificate name
Successfully validated the certificate name
Additional Details
Found hostname mail.post-dwro.de in Certificate Subject Common name

Validating certificate trust
Certificate is trusted and all certificates are present in chain
Additional Details
The Certificate chain has be validated up to a trusted root. Root = OU=Equifax Secure Certificate Authority, O=Equifax, C=US

Testing certificate date to ensure validity
Date Validation passed. The certificate is not expired.
Additional Details
Certificate is valid: NotBefore = 7/24/2008 2:33:34 PM, NotAfter = 7/25/2011 2:33:34 PM"

Testing Http Authentication Methods for URL https://mail.post-dwro.de/rpc/rpcproxy.dll
Http Authentication Methods are correct
Additional Details
Found all expected authentication methods and no disallowed methods. Methods Found: Basic

Testing SSL mutual authentication with RPC Proxy server
Successfully verified Mutual Authentication
Additional Details
Certificate common name mail.post-dwro.de matches msstd:mail.post-dwro.de

Attempting to Ping RPC Proxy mail.post-dwro.de
Pinged RPC Proxy successfully
Additional Details
Completed with HTTP status 200 - OK

Attempting to ping RPC Endpoint 6001 (Exchange Information Store) on server sroex07.dwro.intern
Pinged Endpoint successfully
Additional Details
RPC Status Ok (0) returned in 296 ms.

Testing NSPI Interface on Exchange Mailbox Server
Successfully tested NSPI Interface.
Test Steps
Attempting to ping RPC Endpoint 6004 (NSPI Proxy Interface) on server sroex07.dwro.intern
Pinged Endpoint successfully
Additional Details
RPC Status Ok (0) returned in 218 ms.

Testing NSPI "Check Name" for user murat.candan@diakonie-rosenheim.de against server sroex07.dwro.intern
Check Name succeeded
Additional Details
DisplayName: Murat Candan, LegDN: /o=Diakonie/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=murat.candan

Testing the Referral Service on Exchange Mailbox Server
Successfully tested the Referral Service
Test Steps
Attempting to ping RPC Endpoint 6002 (Referral Interface) on server sroex07.dwro.intern
Pinged Endpoint successfully
Additional Details
RPC Status Ok (0) returned in 312 ms.

Attempting to perform Referral for user /o=Diakonie/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=murat.candan on Server sroex07.dwro.intern
Succeeded getting Referral
Additional Details
Server returned by Referral Service: sroex07.dwro.intern

Testing the Exchange Information Store on Mailbox Server
Successfully tested the Information Store
Test Steps
Attempting to ping RPC Endpoint 6001 (Exchange Information Store) on server sroex07.dwro.intern
Pinged Endpoint successfully
Additional Details
RPC Status Ok (0) returned in 171 ms.

Testing Logon to the Exchange Information Store
Successfully logged on to the Information Store