2.381 Attribute userPrincipalName
This attribute contains the UPN that is an Internet-style logon name for a user, as specified in [RFC822]. The UPN is shorter than the DN and easier to remember.
By convention, this attribute maps to the user email name. The value set for this attribute is equal to the length of the user's ID and the domain name.
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cn: User-Principal-Name ldapDisplayName: userPrincipalName attributeId: 1.2.840.113556.1.4.656 attributeSyntax: 2.5.5.12 omSyntax: 64 isSingleValued: TRUE schemaIdGuid: 28630ebb-41d5-11d1-a9c1-0000f80367c1 systemOnly: FALSE searchFlags: fATTINDEX rangeUpper: 1024 attributeSecurityGuid: e48d0154-bcf8-11d1-8702-00c04fb96050 isMemberOfPartialAttributeSet: TRUE systemFlags: FLAG_SCHEMA_BASE_OBJECT | FLAG_ATTR_REQ_PARTIAL_SET_MEMBER
Version-Specific Behavior: First implemented on Active Directory Application Mode (ADAM) and Windows Server 2008 operating system.