MTA-STS & TLS-RPT Record Checker
This tool checks your domain's MTA-STS and TLS-RPT records to ensure email is delivered securely. It verifies DNS records, policy file content, and the overall configuration for potential errors and warnings.
Enter Your Domain for Analysis
Input the domain name (e.g., example.com) for which you want to verify MTA-STS and TLS-RPT implementation.
What is MTA-STS?
**Mail Transfer Agent Strict Transport Security (MTA-STS)** is an internet standard designed to ensure that email is always sent over a secure, encrypted connection. It helps prevent **downgrade attacks** and passive eavesdropping by requiring mail servers to use TLS when exchanging emails for your domain. Implementing MTA-STS adds a crucial layer of security, protecting your email communications from interception and tampering.
Learn more about MTA-STS (RFC 8461) →What is TLS-RPT?
**TLS Reporting (TLS-RPT)** works in conjunction with MTA-STS. It provides a mechanism for receiving aggregate reports on failures related to MTA-STS policy validation or other TLS-related issues during email delivery. These reports are crucial for monitoring and debugging your email security posture, allowing you to quickly identify and resolve problems that might prevent secure mail delivery.
Learn more about TLS-RPT (RFC 8460) →