1、在邮件服务器打开Exchange命令行管理程序，将以下命令一行一行粘贴到里面执行
Get-ExchangeServer | Add-ADPermission -User MailAdmin -AccessRights extendedright -ExtendedRights MS-Exch-Epi-may-impersonate
Get-ExchangeServer | Add-ADPermission -User MailAdmin -AccessRights extendedright -ExtendedRights MS-Exch-Epi-impersonation
Get-MailboxDatabase | Add-ADPermission -User MailAdmin -AccessRights extendedright -ExtendedRights MS-Exch-Epi-impersonation
Get-MailboxDatabase | Add-ADPermission -User MailAdmin -AccessRights extendedright -ExtendedRights MS-Exch-Epi-may-impersonate
Get-MailboxDatabase | Add-ADPermission -User MailAdmin -AccessRights extendedright -ExtendedRights Receive-As
注意这里是以MailAdmin帐号为例的，如果使用别的帐号，请将MailAdmin替换成别的帐号，同时下面介绍的也需要替换帐号
2、在AD用户里找到MailAdmin用户，右键选择隶属于
将Exchange相关的角色添加进去，具体角色如下：
Domain Users
Enterprise Admins
Exchange Install Domain Servers
Exchange Organization Administrators
Exchange Recipient Administrators
Exchange Servers
Exchange View-Only Administrators
ExchangeLegacyInterop
