新建接收域DouBi.Ren,命令如下：  
new-AcceptedDomain -Name 'DouBi.Ren' -DomainName 'DouBi.Ren' -DomainType 'Authoritative'

新建电子邮件地址策略，增加DouBi.Ren地址格式,命令如下：  
new-EmailAddressPolicy -Name 'DouBi.Ren' -RecipientContainer 'DoubiOA.Ren' -IncludedRecipients 'AllRecipients' -Priority '最低' -EnabledEmailAddressTemplates 'SMTP:%[email protected]'

更新电子邮件地址策略，命令如下：  
update-EmailAddressPolicy -Identity 'DouBi.Ren'

新建发送连接器，命令如下：  
New-SendConnector -Name "Internet" -Usage Custom -AddressSpace "*;1" –IsScopedConnector $false -DNSRoutingEnabled $true –UseExternalDNSServersEnabled $false –SourceTransportServers ‘PEK1-CHS-01’,’PEK1-CHS-02’