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DNS Validation Tool

Check your email authentication setup with comprehensive DNS validation. Verify MX, SPF, DKIM, and DMARC records to ensure optimal email deliverability.

Check Your Domain's Email Authentication Setup

Enter up to 100 domains. Separate with commas, spaces, or new lines.

What We Check

MX Records: Mail server configuration for receiving emails
SPF: Specifies which servers are authorized to send emails for your domain
DKIM: Adds a digital signature to verify email authenticity
DMARC: Defines how to handle emails that fail SPF or DKIM checks