DMARC & SPF DNS Record Builder

DMARC & SPF DNS Record Builder

Generate TXT security records to publish on your DNS server. Boost your domain reputation, secure mail traffic, and prevent phishing spoofing.

SPF Record Generator
DMARC Record Generator
SPF Settings
DMARC Settings
Features

DNS Security Records Builder

Publish robust record rules to eliminate server spoofing vulnerabilities.

📧

Prevent Email Phishing

Align SPF and DMARC directives so spam servers cannot fake mails carrying your domain credentials.

📈

Increase Mail Delivery

Securely validates senders with Gmail/Outlook policies, dramatically reducing bounce-back alerts.

🔒

100% Client-Side

Generate records locally in your browser workspace. No network telemetry or cookies logged.

🗂️

Dual Tab Layout

Toggle between SPF and DMARC builder interfaces instantly.

📨

XML Reports Config

Customize rua parameters to receive automated aggregate reports from mail receivers.

🛡️

Detailed Fail Policies

Set strict hardfail (-all) or softer quarantine rules to audit domain alignment first.

Frequently Asked Questions

An SPF record is a DNS TXT record that lists all authorized IP addresses and servers permitted to send emails on behalf of your domain name. Receiving mail servers inspect SPF records to check for spoofed senders.

DMARC stands for Domain-based Message Authentication, Reporting, and Conformance. It is an email authentication protocol that extends SPF and DKIM by instructing the receiving mailserver exactly how to handle failures (none, quarantine, or reject) and provides xml reports.

You must publish them as TXT records in your DNS zones console provided by your domain registrar (e.g. Cloudflare, Namecheap, GoDaddy).

Softfail instructs receivers to flag failing mail as spam but deliver it. Hardfail instructs receivers to block and drop the message immediately. Softfail is recommended for testing periods.

Propagation depends on the TTL (Time to Live) value set on the record, typically taking between 1 hour and 24 hours globally.

The rua email allows large mail providers like Google and Microsoft to send you structured XML summaries of all messages sent using your domain, identifying potential spoofing sources.
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