MTA-STS (Mail Transfer Agent Strict Transport Security) is a mechanism that instructs an SMTP server to ensure communication with other SMTP servers is encrypted. It mandates that the domain name on the certificate must match the domain specified in the policy.
How MTA-STS Works
MTA-STS uses a combination of DNS and HTTPS to publish a policy that informs the sending party what actions to take if an encrypted channel cannot be negotiated. This enhances the security of email communications by ensuring that sensitive data is transmitted over secure connections.
Configuring MTA Records
When using SpamExperts services, you can find steps and instructions for configuring MTA records for different mail servers at the following link: Configure Identity Header Identification Method in SpamExperts and Your MTA.
Additional Resources
To learn more about MTA-STS and how to configure it for domains in cPanel or Plesk, visit: How to Configure MTA-STS for Domains in cPanel or Plesk.
Gotchas to Avoid
- Ensure that your DNS records are correctly configured to avoid issues with email delivery.
- Regularly check your MTA-STS policy to ensure it is up to date and functioning correctly.
