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550 5.7.367 Remote server returned not permitted to relay

Network Sharing , TCP/IP, Internet, Wireless, Exchange, IIS, ISA and Print

550 5.7.367 Remote server returned not permitted to relay

Postby chicagotech » Fri May 12, 2017 10:25 am

Situation: The client can't send email to a receipt with this message Reported error: 550 5.7.367 Remote server returned not permitted to relay -> 550 Relaying denied.

Troubleshooting: 1. It could the DNS issue such as Incorrect MX record, Incorrect SPF record. Make sure you have correct DNS setup or the receipt server has correct DNS setup.
2. Make sure the server is accessible.
3. In our case we received "not authorized to relay messages through the server that reported this error" message. We find the receipt server is down.
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chicagotech
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