DNS Security
How to Configure SPF, DMARC, and DKIM for Email Security
Test Admin
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June 28, 2026
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5 min read
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33 views
Email spoofing is a major threat. Learn how to configure SPF, DMARC, and DKIM.
Email authentication prevents spoofing.
## SPF
v=spf1 include:_spf.google.com ~all
## DKIM
Digital signature on outgoing emails.
## DMARC
v=DMARC1; p=quarantine; rua=mailto:[email protected]
## SPF
v=spf1 include:_spf.google.com ~all
## DKIM
Digital signature on outgoing emails.
## DMARC
v=DMARC1; p=quarantine; rua=mailto:[email protected]