How To Secure Your Google Workspace Domain Email with SPF, DKIM, and DMARC Records

Mike Murphy
7 min readFeb 20, 2024

Setup Email Authentication to reduce spam, spoofing and phishing.

Who is this tutorial for?

Google Workspace users with a custom Gmail address using a domain name you own and manage.

  • If your Google Workspace Organization sends over 5000 emails/day, setting up email authentication is required as of Feb 2024.
  • Has a client or customer ever told you that your emails always end up in their Spam/Junk folder?
  • Are you a brand or business wanting to protect against phishing & spoofing threats?
  • Do you want peace of mind that emails sent from your domain are secure and trusted?


This is a step-by-step tutorial on how to set up email authentication for your domain and email on Google Workspace and your domain provider by adding SPF, DKIM & DMARC records.


Email Authentication helps protect you against phishing, spoofing (impersonating) and to help make sure your emails are ‘trusted’ and do not get labeled as ‘Spam’.


  • Administrator credentials to sign in to Google Workspace.



Mike Murphy

Podcast & Tech Handyman. I make tutorials and help people figure things out. Email: