📌 Compatibility: Google Workspace (all editions)

Objective

Instead of sending emails directly to the Internet, this procedure allows you to route all outbound messages from your organization through the e-securemail antispam gateways using a secure SMTP relay.

🔑 Important Information

SMTP relay server to configure:
smtp.security-mail.net

This is the address you must configure to route your outbound mail flow through the e-securemail filtering gateways.

🔒 Security Recommendation

For optimal protection of your Google Workspace infrastructure, restrict inbound connections by allowing only the IP addresses of the e-securemail servers in your routing settings.

📥 View the list of e-securemail IP ranges

📋 Configuration Procedure

Configure Outbound SMTP Routing

Step 1: Access Routing Settings

1. Sign in to the Google Admin Console:
   admin.google.com
2. Go to:
   Apps > Google Workspace > Gmail
3. Click Routing

Step 2: Create an Outbound Routing Rule

1. In the Routing section, click Configure or Add Another Rule
2. Enable the option:
   Outbound routing - Configure mail gateway

Step 3: Configure the SMTP Relay

• Route name: Enter a descriptive name
  Example: e-securemail Outbound Relay
• Mail server: Enter:
  smtp.security-mail.net
• Port: Keep the default port
  (usually 25 or 587)
• Hosts to use this gateway: Select:
  All domains
• Enable:
  Perform MX lookup on host (recommended)

Step 4: Additional Options (Optional)

• Authentication:
  If required, configure the credentials provided by e-securemail
• TLS:
  Enable TLS encryption to secure the connection
• Allowed IP addresses:
  Restrict relay usage if necessary

Step 5: Finalize the Configuration

1. Click Save or Add Setting
2. Allow up to 24 hours for full configuration propagation

⚠️ Important: Send test emails to verify that the configuration is working correctly.

✅ Verify the Configuration

To confirm that your emails are routed through e-securemail:

1. Send a test email
2. Review the received message headers
3. Verify that smtp.security-mail.net appears in the routing path

ℹ️ Additional Help

For more details about routing configuration in Google Workspace, refer to the Official Google Workspace Help Center