The original message was received at Tue, 27 Dec 2016 10:58:38 -0800
from mail-sn1nam01lp0111.outbound.protection.outlook.com [207.46.163.111]

   ----- The following addresses had permanent fatal errors -----
<*** Email address is removed for privacy ***>
    (reason: 554 5.7.9 Message not accepted for policy reasons.  See https://help.yahoo.com/kb/postmaster/SLN7253.html)

   ----- Transcript of session follows -----
... while talking to mx-sbc.mail.am0.yahoodns.net.:
>>> DATA
<<< 554 5.7.9 Message not accepted for policy reasons.  See https://help.yahoo.com/kb/postmaster/SLN7253.html
554 5.0.0 Service unavailable

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