Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
19,664 questions
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Can we be able to give one person's userprincipalname value as proxy address for another person?
Is this for on-premises Exchange or Exchange Online? In Exchange Online, there is a "hidden" email address policy that requires at least one proxy address to match the UPN value for the mailbox/user, so the answer is NO.