退信訊息:554 Policy violation. Email Session ID

554 Policy violation. Email Session ID: {6646D243- 130002- 57BDC7772-D2E2154B}

554 Spam email. Email Session ID: (66F232A1-0-99FA92ES-FC1C9602)

這訊息是

checkpoint

或是

sophos

防火牆

Spam check 退信

 

 

 

 

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