Updated: August 2026 • Verified v1.2

DNS DMARC Record Generator & Policy Builder

Internet & NetworkNetwork

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.
DMARC Syntax Synthesis: _dmarc.domain IN TXT "v=DMARC1; p=[policy]; rua=mailto:[email]; aspf=[r/s]; adkim=[r/s]"
Was this calculation helpful?

Understanding Your Results

Constructs valid RFC 7489 DMARC TXT records, generates BIND zone file lines (`_dmarc.domain.com.`), and outputs terminal `dig` verification commands.

Practical Guidance & Next Steps

Google and Yahoo now reject or quarantine emails from domains that lack a valid DMARC record. Start with `p=none` to collect reports, then graduate to `p=quarantine` and finally `p=reject`.

What is this?

A domain security utility that constructs RFC 7489 compliant DMARC email authentication policy records.

How does it work?

1. Enter your domain name and select a DMARC policy (reject, quarantine, or none). 2. Enter aggregate report email (rua) and alignment options. 3. Copy the DNS TXT record and BIND zone entry in 1 click.

Why use it?

Guarantees email delivery to Gmail and Yahoo inboxes while preventing domain spoofing and phishing.

Technical Scope & Calculation Limitations

Generates RFC 7489 standard DMARC syntax.

Frequently Asked Questions

DMARC (Domain-based Message Authentication, Reporting, and Conformance) tells receiving email servers what to do with incoming emails that fail SPF or DKIM checks. In 2024, Google and Yahoo made DMARC mandatory for all bulk senders.
Windows Desktop & Widget Options

Want this capability on your Windows desktop?

All Windows widgets
System Tray Tool
9.4/10

TrafficMonitor Net Speed Tray Utility

Lightweight open-source Windows taskbar utility showing live net speed, CPU, and RAM metrics.

FreeEasy InstallLow RAM
By zhongyang219 (Open Source)View Widget
Complementary Utilities

Related Tools for Your Workflow

All Internet & Network tools
HTML5 / React / TypeScriptStatic Utility
HTML5 / React / TypeScriptStatic Utility
HTML5 / React / TypeScriptStatic Utility