Use ADSIEdit to assign custom uPNSuffixes for an OU

http://msdn.microsoft.com/en-us/library/aa442679.aspx

or

Add UPN Suffixes to a Forest:

http://support.microsoft.com/kb/243629

‹ LINQtoSharePoint Provider

Talking about SharePoint and SQL Licensing Blog post ›

Tagged with: AD, ADSIEdit, UPN
Posted in Active Directory