Transport Security

MTA-STS & TLS-RPT Manager

Strict Transport Security for email. Enforce TLS encryption and receive delivery-failure reports — generate your DNS records and policy file in one step.

Analyze Domain

General Configuration

Domain Name *

Enter domain and press Enter to auto-fetch mail servers.

Policy Mode

Report-only mode. Use this to start.

Max Age (Seconds)

Default: 86400 (1 day) as requested. Recommended: 604800.

Reporting Email (TLS-RPT)

For delivery failure reports (via _smtp._tls).

MX Whitelist

Authorized Mail Server Patterns

Ready to Generate

Enter your domain name in the configuration panel to automatically detect current settings and generate your MTA-STS records.

Prevent Attacks

Stops downgrade attacks & man-in-the-middle snooping.

Get Reports

Receive TLS-RPT insights on email delivery failures.