Verify your domain's MTA-STS policy and TLS reporting configuration. We check the DNS record, policy file, and TLS-RPT setup.
MTA-STS (Mail Transfer Agent Strict Transport Security) tells sending mail servers that your domain requires TLS encryption for email delivery. Without MTA-STS, attackers can downgrade SMTP connections to unencrypted, exposing email content. It works alongside TLS-RPT for reporting delivery failures.
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