建议
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去除匿名中继的权限
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Get-ReceiveConnector "Internet Receive Connector" | Remove-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"
去除接收匿名邮件域发送者的权限
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Get-ReceiveConnector "Internet Receive Connector" | Remove-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "ms-exch-smtp-accept-authoritative-domain-sender"
注:请在您的internet的接收连接器上使用此命令去除权限。请将Internet Receive Connector替换成您的Internet接收连接器的名字
参考资料
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Sender ID Framework SPF Record Wizard
http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard
若需求启用匿名中继,在网络内添加匿名IP,是否可以避免此问题产生呢?