Security

MTA-STS Policy Generator

Generate an MTA-STS policy file and the required DNS TXT record to improve inbound email security.

Use exact hostnames or wildcard patterns supported by MTA-STS.
Publish policy at https://mta-sts.yourdomain/.well-known/mta-sts.txt and set the _mta-sts TXT record.

Policy File

DNS TXT Record

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Privacy & Security

Generated locally in your browser. No data is sent to any server.

Data: None
Client-side-Side
Active
v1.0

How to Use

Enter your MX hosts and mode, then generate policy + DNS record.

Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.

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