Sourceone fails after migration to exchange 2010

Hi All

I'm running into a very strange issue at a customer.

The migrated to exchange 2010 recently and since then sourceone doesn't work.

They had an exchange server called "exchange"01 running 2007 before and now migrated to an exchange 2010 "exchange-03" server now.

The emc service account has a mailbox and when running an activity towards the emcservicemailbox its working fine.

When running an activity towards a pilot group we get the error "Failed to logon to mailsource.

The outlook profile on the sourceone server is configured correclty and the emc service accound has send as and recieve as permissions on the exchange 2010 server.

In the sourceone console under servers => tuning tab i do see however 2 entries, one for the new and one for the old exchange server

I don"t think this is causing the issue, but does anyone has any other suggestions because i4m rnning out of ideas

thnx