AD Management For Managing users Starting the Active Directory Domains and Trusts Snap-in Click Start , point to Programs , point to Administrative Tools , and then click Active Directory Domains and Trusts . The Active Directory Domains and Trusts snap-in appears as in Figure 1 below. Figure 1: Active Directory Domains and Trust snap-in The User Principal Name (UPN) provides an easy-to-use naming style for users to log on to Active Directory. The style of the UPN is based on Internet standard RFC 822, which is sometimes referred to as a mailaddress . The default UPN suffix is the forest DNS name, which is the DNS name of the first domain in the first tree of the forest. In this and the other step-by-step guides on this site, the default UPN suffix is reskit.com . You can add alternate User Principal Name suffixes, which increase logon security. And you
