Configuring MTA-STS in Symantec Messaging Gateway 10.9.2

Products

• Messaging Gateway
• Messaging Gateway Hardware
• Messaging Gateway for Service Providers

Issue/Introduction

Starting with version 10.9.2, Symantec Messaging Gateway (SMG) introduces support for MTA Strict Transport Security (MTA-STS). This protocol allows mail service providers to declare their ability to receive TLS-secure SMTP connections and specify how sending servers should handle delivery if a secure connection cannot be established.

Environment

SMG version 10.9.2

Resolution

Configuration Steps

To enable and configure MTA-STS support for a specific domain, follow the navigation path and settings below:

1. Navigate to Domains: In the Control Center, go to Protocols > Domains.

2. Select the Domain: Locate and click on the Domain you wish to configure from the list.

3. Access Delivery Settings: On the Edit Domain page, locate the Delivery tab or section related to encryption.

4. Configure TLS Encryption:

   • Ensure TLS encryption is enabled for the domain.

   • Check the option: Use MTA-STS for secure delivery.
     

5. Save Changes: Click Save to apply the configuration.