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Splitting Email Delivery Routing: A Comprehensive Guide to Using Google Workspace and FastMail

April 22, 2025Technology4630
Splitting Email Delivery Routing: A Comprehensive Guide to Using Googl

Splitting Email Delivery Routing: A Comprehensive Guide to Using Google Workspace and FastMail

Organizations often require the flexibility to manage their email routing across multiple server providers. This guide will walk you through the process of splitting email delivery routing between Google Workspace and FastMail, using MX Records and DNS management. By the end, you’ll have a clear understanding of how to configure your domains to route emails to either provider based on your needs.

Step 1: Set Up Your Email Accounts

The first step is to set up email accounts on both Google Workspace and FastMail. Make sure that these accounts are fully operational and configured to your needs. This includes setting up necessary permissions, verifying the domains, and ensuring that the accounts are ready to receive and send emails.

Step 2: Access Your DNS Management

To manage your domains' DNS settings, you’ll need to log in to your domain registrar or DNS hosting provider. This is where you will configure the MX Records to direct email traffic to the appropriate servers.

Step 3: Configure MX Records

MX Records determine the priority for email delivery. By setting up multiple MX Records, you can control the order in which emails are routed to the different mail servers. Here’s a detailed guide on how to set this up:

Adding MX Records for Google Workspace

MX Record Priority: 1
Mail Server:
MX Record Priority: 5
Mail Server:
MX Record Priority: 5
Mail Server:
MX Record Priority: 10
Mail Server:
MX Record Priority: 10
Mail Server:

Adding MX Records for FastMail

MX Record Priority: 20
Mail Server:
MX Record Priority: 20
Mail Server:
MX Record Priority: 30
Mail Server:

Example MX Record Configuration Table

Priority Mail Server 1 5 5 10 10 20 20 30

Ensure each MX Record has a unique priority level, allowing you to control the order of delivery. Lower priority values have higher priority.

Step 4: Email Routing Configuration

To effectively split routing based on users, consider the following approaches:

User-Specific Routing

Create accounts on Google Workspace for users who should receive emails there. Create accounts on FastMail for users who should receive emails there.

This method ensures that each user’s email is delivered to the appropriate provider based on their account.

Subdomain Routing

Use subdomains to route emails to different providers. For example, if you want to route to Google Workspace, use user1@ for the subdomain instead of user1@ for FastMail.

This method allows you to direct emails based on specific subdomains.

Step 5: Verify Your Configuration

After making changes, it is important to ensure that your DNS changes have propagated globally. This process can take up to 48 hours.

Propagation: Use online tools to check if your DNS records have updated. Testing: Send test emails to both Google Workspace and FastMail accounts to verify that they are being routed correctly.

Regular testing ensures that your email delivery is functioning as expected.

Additional Considerations

To enhance your email deliverability and security, don#39;t forget to set up the following:

SPF/DKIM/DMARC Records: Proper SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting Conformance) records can improve email deliverability and protect against spoofing. Monitoring: Regularly monitor email delivery and make adjustments as needed to meet your organization’s requirements.

By following these steps, you can effectively split email delivery routing between Google Workspace and FastMail, enhancing the flexibility and reliability of your email service.