DNS Record Generator

Generate common DNS records, A, CNAME, MX, SPF, and DMARC, with sensible defaults and explanations, ready to add through your DNS provider's control panel.

Domain

A record

IPv4 address

CNAME record

MX record

SPF record

DMARC record

DNS records

; A record: point example.com at your server
example.com.		IN	A	203.0.113.10

; CNAME record: alias www.example.com to example.com
www.example.com.	IN	CNAME	example.com.

; MX record: mail server for example.com
example.com.		IN	MX	10 mail.example.com.

; SPF record: authorize senders for example.com
example.com.		IN	TXT	"v=spf1 include:_spf.google.com ~all"

; DMARC record: policy for handling unauthenticated mail
_dmarc.example.com.	IN	TXT	"v=DMARC1; p=none; rua=mailto:dmarc-reports@example.com"

Add these through your DNS provider's control panel (values only, the zone-file formatting above is just for clarity). Start DMARC at p=noneto monitor without affecting delivery, then tighten it once you've confirmed legitimate mail passes.

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Frequently asked questions

What's the difference between SPF and DMARC?+

SPF lists which mail servers are allowed to send email for your domain; DMARC tells receiving mail servers what to do when a message fails SPF or DKIM checks, and where to send reports about it.

Why start DMARC at p=none?+

It puts DMARC in monitoring-only mode, so you can see reports of what's failing without risking legitimate email being quarantined or rejected. Tighten to quarantine or reject once you've confirmed everything passes.

Do I paste this directly into my DNS provider?+

The values (name, type, content) are what you enter; the zone-file-style formatting shown is just for readability. Most DNS providers use a simpler form-based interface rather than raw zone file syntax.