AlherPulse tools Beta

Enter the main domain and, optionally, a custom DMARC domain.

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DNS email check form guide

This tool validates your domain email baseline in one pass.

How to fill the form

  • Main domain: enter your base domain (for example, example.com).
  • DMARC domain (optional): use it only when DMARC is hosted on a different domain.
  • Click "Run email DNS check" to verify SPF, DMARC, and DKIM.

What each result means

  • SPF: checks whether a TXT record with v=spf1 exists on the main domain.
  • DMARC: checks whether a TXT record with v=dmarc1 exists on _dmarc.<used DMARC domain>.
  • DKIM: looks for DKIM signals on _domainkey and common selectors.
  • OK/FAIL status: indicates whether the expected record was found.
  • Details: shows the discovered value or why it is missing.

Enter a domain to check SPF, DMARC, and DKIM.