MTA-STS (Mail Transfer Agent Strict Transport Security) is a security policy for email services that helps to protect email users from a variety of security threats, including man-in-the-middle attacks and eavesdropping. Implementing an MTA-STS policy helps to ensure that email messages are delivered securely and that user data remains confidential. The policy requires that email services use secure transport protocols, such as Transport Layer Security (TLS), to transmit messages. This helps to prevent unauthorized access to email data and to protect against attacks that target vulnerabilities in email delivery infrastructure.
By implementing an MTA-STS policy, email services can increase user confidence in the security of their email and reduce the risk of data breaches and other security incidents. Additionally, the policy helps to ensure that email services are able to comply with data protection and privacy regulations, such as the European General Data Protection Regulation (GDPR).
If you are using Thexyz Email with a custom domain name, you can implement an MTA-STS policy to improve the security of your email communications. In this knowledge base guide, we will walk you through the process of adding an MTA-STS policy to your email with Thexyz.
Step 1: Verify Prerequisites
Before you begin, you should verify that you have the following prerequisites:
A public SSL certificate for your domain that is trusted by a reputable certificate authority (CA).
Access to the DNS management interface for your domain.
Step 2: Publish the MTA-STS Policy
To publish the MTA-STS policy for your domain, you need to create a TXT record in your domain's DNS zone. This record should include the following information:
The "v" field specifies the version of the MTA-STS standard that you are using. The "id" field specifies the date and time (in UTC) that the policy was published. You should choose a date that is in the future, so that your policy will not be considered out-of-date before it has been published.
Once you have completed the above steps, you should test your MTA-STS policy to ensure that it is working correctly. You can use a tool such as the MTA-STS Policy Tester to check that your policy is being enforced correctly.
By adding an MTA-STS policy in Exchange Server, you can help to protect your email communications from interception and tampering. By following this knowledge base guide, you can implement an MTA-STS policy in your Exchange Server environment with confidence.