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The response was:

550 bosauthsmtp12: Host 74.125.82.47: No unauthenticated relaying permitted

Final-Recipient: rfc822;  info@rccggracetabernacle.org
Action: failed
Status: 5.0.0
Remote-MTA: dns;  rccggracetabernacle.org  (66.96.147.114, the server for the domain.)
Diagnostic-Code: smtp; 550 bosauthsmtp12: Host  74.125.82.47 : No unauthenticated relaying permitted
Last-Attempt-Date: Wed, 15 Nov 2017 07:29:44 -0800 (PST)