MTA-STS Record and Policy Checker
Use this tool to check, lookup, and validate your MTA-STS record and policy and get configuration suggestions.
What is an MTA-STS Checker?
The tool checks if MTA-STS DNS record and policy files are published for your domain, and if they are deployed correctly. To run the MTA-STS Checker tool, enter the domain in the Domain section, and click the “Check MTA-STS” button. After that, the MTA-STS Checker tool will read the record and policy file, and will:
- Check if MTA-STS TXT record is published in DNS for the domain
- Verify if MTA-STS record's syntax corresponds to the specification
- Check if the MTA-STS policy file is published at the specified URL
- Validate the content of the policy and check it corresponds to specifications