W4JEW

// This worker is designed to be able to neatly handle MTA-STS policies for multiple domains.

// Make a new worker with this script and add your domains to the stsPolicies dict like the example.
// Add a DNS AAAA record for mta-sts.yourdomain.com pointing to 100:: and set to proxied,
// then add a workers route for mta-sts.yourdomain.com/* pointing to this worker.

// You'll still need to manually add the appropriate _mta-sts.yourdomain.com TXT record to enable the policy, 
// and the _smtp._tls.yourdomain.com TXT record for reporting.

const stsPolicies = {