MTA-STS Record and Policy Checker
Quickly verify and validate your MTA-STS records with our powerful tool. Ensure your email security policies are correctly configured to safeguard your domain's email communications.
Quickly verify and validate your MTA-STS records with our powerful tool. Ensure your email security policies are correctly configured to safeguard your domain's email communications.
See it in Action
Misconfigured MTA-STS records can lead to emails being sent over unsecured connections, potentially exposing them to interception or tampering. It can also affect your email deliverability and cause your emails to be flagged as suspicious.
It's recommended to review and update your MTA-STS policy regularly or whenever you make changes to your email infrastructure. Keeping the policy up-to-date ensures ongoing compliance and security.
Yes, MTA-STS is compatible with most modern email servers. However, you should verify that your email server supports the protocol and that your MTA-STS configuration aligns with your server's capabilities.
MTA-STS is a policy-based approach that enforces TLS encryption for email delivery, while SMTP TLS is a protocol that provides encryption for email transmission. MTA-STS builds on SMTP TLS by requiring strict compliance with security policies.
MTA-STS can enhance email deliverability by ensuring that emails are transmitted over secure connections, reducing the likelihood of your emails being rejected or marked as spam due to security concerns.
The MTA-STS policy file defines the security policies for email transmission, including the required TLS version and whether downgrade options are permitted. It instructs sending servers on how to handle email encryption for your domain.
Use our MTA-STS Lookup Tool to test your configuration. The tool will check if your MTA-STS records are correctly set up and if the policy file is properly hosted and formatted.
Yes, MTA-STS can be used in conjunction with other email security protocols like DMARC, DKIM, and SPF. Combining these protocols provides a multi-layered approach to email security.
If your MTA-STS record fails validation, review the results for errors or misconfigurations. Correct any issues with the TXT record or policy file, and re-test to ensure compliance.
MTA-STS relies on DNS and HTTPS for delivering policy files, so any issues with DNS resolution or HTTPS access can impact its effectiveness. Ensure that your DNS and HTTPS configurations are correctly set up for optimal results.
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