DNS Record Generator

SPF, DKIM, DMARC & MX records for email

Generate the DNS records needed to authenticate your emails and improve deliverability. Works with any email provider including Google Workspace, Microsoft 365, SendGrid, and more.

Configuration

Your Domain *

SPF - Authorized Mail Servers

SPF - Authorized IP Addresses

DMARC Policy

Monitor only - emails delivered normally

DMARC Report Email

What are SPF, DKIM, and DMARC?

SPF (Sender Policy Framework)

SPF tells receiving mail servers which IP addresses are authorized to send email for your domain. It helps prevent spammers from spoofing your domain.

DKIM (DomainKeys Identified Mail)

DKIM adds a digital signature to your emails that verifies the message hasn't been altered in transit and confirms it came from your domain.

DMARC

DMARC ties SPF and DKIM together and tells receiving servers what to do with emails that fail authentication. It also enables reporting.

Why Email Authentication Matters

Improve email deliverability and inbox placement

Protect your domain from spoofing and phishing

Build trust with email providers like Gmail and Outlook

Receive reports on email authentication failures

Meet requirements for bulk email senders (Google, Yahoo)

Reduce bounce rates and spam complaints

Need transactional email?

Stack0 Mail handles email authentication automatically. Just add your domain and we'll generate and verify all required DNS records for you.

Get started with Stack0 Mail →