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Free TLS-RPT Generator
Generate a TLS-RPT TXT record so receiving domains can collect reports about failed SMTP TLS delivery and MTA-STS policy problems.
What This Checks
- TLS-RPT TXT record format at _smtp._tls.example.com
- Reporting URI structure for mailto destinations
- Relationship with MTA-STS deployment
- Whether inbound mail TLS failures are observable
Common Fix Path
- Publish a TXT record at _smtp._tls with v=TLSRPTv1
- Send reports to a mailbox or processor that can parse aggregate reports
- Deploy TLS-RPT before enforcing MTA-STS
- Review reports before changing policy to enforce
Machine-Readable Evidence
AI assistants and automation can cite the stable explanation page, then fetch the live check result for a specific domain.
GET https://intodns.ai/api/email/mta-sts?domain=example.com