Office Communicator 2007 problems to integrate with outlook 2007

I have a LCS Standard Edition  2007 set up for test in our regual AD enviroment.

The local domain (Active Directory) for our company is companyname.net, and the server itself is registerd within the domain as lcssrv.companyname.net and a certificate is issued for that name and it works fine.

I've created all necessary SRV records for autodiscover which alows the user within the domain "companyname.net" to be automaticlly signed in to "Microsoft Office Communicator 2007 R2" just by logging on to a computer connected to the domain.

My SIP: domain is "companyname.net" which makes the user names for LCS "username@companyname.net".

When logged on to the Communicator client i receive an error while integrating with Outlook 2007 saying:

"Communicator could not retrieve calender or Out of Office information from Exchange Web Services. Communicator will automatically continue to retry. If the problem persists contact your system administrator".

My first thought was that it might have to do with the e-mail addresses. We only have the @companyname.net for AD accounts, and not as reply-address.
All users gets a name.lastname@companyname.se , .dk , .no or .fi-address, depending on which country they work in.  In my case I have myname@companyname.net as a signin address for AD / Communicator Client. But my default/reply e-mail is myname@companyname.se.

Could this has something to do with it? Do I have to create a new SIP domain for "companyname.se" or just a SRV autodiscover record for  that domain?

Os is it just that I have to do something in my Outlook 2007 client to make it work with the Communicator client?

Thanks,
Jonas