Hamilton Group · Free Tool

SPF & DMARC Record Generator

Build correct SPF and DMARC DNS records for your domain — then copy and paste them into your DNS. Stops attackers spoofing your email.

Your domain (optional — used to show exactly where each record goes)

SPF

DMARC

Who sends email for your domain?

Your own mail servers

Authorise this domain’s MX servers adds mx

Authorise this domain’s A record adds a

Additional IPv4 addresses comma-separated

Other includes comma-separated domains

Enforcement

Policy for everything else

Type: TXTHost / Name: @TTL: 3600

v=spf1 -all

How to use these

Add each record in your DNS provider’s control panel as a TXT record at the Host/Name shown. Changes can take up to an hour to take effect.

Order of play: publish SPF and enable DKIM in your mail platform first, then start DMARC at p=none to gather reports, and tighten to quarantine then reject once your legitimate mail is passing.

Want us to set this up for you? → Check your current setup