Generate MTA-STS Configuration
Fill out the form on the left to instantly generate your _mta-sts DNS TXT record and the content for your HTTPS policy file.
Real-Time HTTPS Policy File & DNS TXT Generation
Instantly generate perfectly formatted Mail Transfer Agent Strict Transport Security (MTA-STS) configurations in real-time. We automatically compile your exact MX hosts, caching directives, and policy enforcement modes into flawless DNS TXT records and the required .well-known/mta-sts.txt HTTPS policy file. Guaranteeing absolute technical accuracy with strictly real-time operations and zero simulated data, our backend completely eliminates manual syntax errors, providing precise timestamped id= trackers so you can instantly deploy strict TLS transit encryption and permanently block Man-in-the-Middle downgrade attacks.
Fill out the form on the left to instantly generate your _mta-sts DNS TXT record and the content for your HTTPS policy file.
Deploying MTA-STS requires perfectly coordinating a DNS TXT record with an HTTPS-hosted policy file. Our generator builds both flawlessly to ensure you pass strict transport security checks.
version: STSv1, mode:, and mx: lines into a perfectly formatted text file that receiving mail servers can easily parse.testing and enforce modes. We recommend starting with testing mode, then upgrading to enforce to guarantee inbound emails are encrypted.mta-sts.yourdomain.com endpoint._mta-sts record. The generated id= tracker is automatically timestamped for cache invalidation.Your feedback has been submitted successfully. We appreciate your help in improving our tools.