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How do I fix an undeliverable email status code of 5.7.1 for my hotmail account?
Hello,
Can you please provide more information from the undelivery bounce back email.
Can you please share the bounce email? It contains important diagnostic data that helps shed some light of the root cause. Feel free to redact personal information when you share.
I was actually asking for the complete bounce email, but I guess your domain actually does reveal some issues:
Your email domain doesn't have DMARC/SPF set up. Please make sure you have SPF, DKIM and DMARC set up correctly in the domain registra DNS record. If these records are not set up correctly or missing, Microsoft can reject your emails to Microsoft email users.
