QQ / SMTP error code 550

smtp;550 DMARC check failed http://service.mail.qq.com/cgi-bin/help?subtype=1&&no=1001508&&id=16.

High severity

The sent message failed the DMARC policy for the sending domain. If the sending domain has a reject policy set for DMARC, the message must pass DKIM or have SPF aligned to the domain with a custom Return-Path. To resolve this, you'll need to contact your email service provider to see how to send a message that passes DMARC support.

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Built with

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