To improve email arrival and combat spoofing, setting up DKIM, DMARC, and SPF is critical for your Google Workspace account . Sender Policy Framework verify that emails come from your authorized domains. https://diegozdzi545989.thebindingwiki.com/9216608/safeguarding_your_google_workspace_environment_a_dkim_dmarc_and_sender_policy_framework_tutorial