This article describes the compatibility of Microsoft Office SharePoint with Single Label Domains, Disjoint Namespaces, and Discontiguous Namespaces.
Warning The information in this article has not been confirmed or tested by Microsoft. Use the information in this article at your own risk. Microsoft provides this information "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.
Because the use of SLDs is not a recommended practice, SharePoint products are not extensively tested in this scenario. Therefore, there may be incompatibilities when SharePoint products are implemented in an SLD environment: this includes single label domains or single label forests, in either the SharePoint server's domain or the SharePoint end user's domain. Although most features will work, it is known that the Profile Import feature will not work against an SLD.
SharePoint Server 2010 has the known following incompatibilities:
Cannot import users from Active Directory containers that contain space in a single label domain.
Configuring user profile import in a single label domain environment produces an error.
Affected Office SharePoint products include the following
When you install the FAST Search Server 2010 for SharePoint in a disjointed network environment, the Post Setup Configuration of FAST Search Server 2010 for SharePoint fails. A supported hotfix is available from Microsoft. For more information see Microsoft Knowledge Base Article http://support.microsoft.com/kb/2308915.