If you use Google Workspace for your email accounts and Google Domains as your domain host, you will need to set up some DNS records before using your email accounts for sending.
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Adding Google domains to Google Workspace
You can connect your Google domain to your Google Workspace in a few simple steps by giving permissions to Google Workspace to automatically generate DNS records for your domain.
Here are the steps to connect a Google Domain to Google Workspace.
Log in to your Google Admin and Google Domain.
On your Accounts tab, select the Domains tab.
Click Manage Domains and select Add a domain.
Enter your domain name and select Secondary domain.
Click on Add domain & Start verification to verify your domain.
If the account that you used to buy is different from the workspace admin account, you need to sign in with its credentials to verify the ownership.
You will be asked to permit the workspace admin to manage the domain.
Click Add and click on Go to Google Workspace.
After verifying your ownership, go back to Google Workspace. The domain will be verified.
Setting MX, SPF and DKIM for Google domains
Log in to your Google Workspace Admin Console.
Click on the Accounts tab, and select the Domains tab.
Click Manage Domains.
Find the domain that you are going to connect to and click Activate Gmail.
Select Set up MX Record, and click Next.
You will be asked to sign in to your Google Domain. After signing in and authorizing, Google will automatically update your domain settings.
Click 'Yes, connect.' to automatically add MX, SPF, and DKIM records for your Google domain.
You can check the records in the DNS.
Setting DMARC for Google domains
Note: Google will automatically add MX, SPF, and DKIM records for your domain, and you only need to manually add the DMARC record.
To add the DMARC record for your Google domains, please follow these steps:
On the DNS page of your Google domain, click on the arrow of Custom Records.
Enter the following details.
Host Name: _dmarc
Type: TXT
Value: v=DMARC1;p=none;sp=none;pct=100;rua=mailto:[email protected];ri=86400;aspf=s;adkim=s;fo=1
Set the TTL to the lowest value.
For rua tag in the value field, please replace [email protected] with your email address.