Email Security DNS Validator (DMARC/SPF/DKIM)

MX Lookup — Email DNS, SPF, DKIM & DMARC

junipr/mx-lookup

Check MX, SPF, DKIM, DMARC, TXT, CAA, and email DNS records in bulk with validation findings and deliverability diagnostics.

Domain Security & Email Deliverability — DNS, SPF, DMARC, DKIM

ryanclinton/dns-record-lookup

Audit a domain portfolio for email spoofing, broken SPF, DMARC enforcement, DNSSEC and shadow-SaaS senders. Returns a posture score, what to fix first, vendor dependencies and drift alerts — not just records. Bulk DNS / SPF / DMARC / DKIM lookup, no API keys.

Email Security & Deliverability Analyzer — SPF DKIM DMARC

perryay/email-security-analyzer

Enterprise email domain security audit: SPF/DKIM/DMARC/BIMI/MTA-STS DNS validation, 50+ blacklist scans, MX record analysis with IP resolution, deliverability scoring (0-100), and detailed remediation advice.

Audit a domain's SPF, DMARC, and DKIM email authentication DNS records for deliverability and security readiness.

Check email deliverability and DNS security for any list of domains: SPF, DKIM, DMARC, MX, DNSSEC, MTA-STS, TLS-RPT and BIMI audited in one run. Deterministic scoring, actionable findings, no API keys.

DNS & Domain Intelligence Scraper (SPF, DMARC, DKIM, DNSSEC)

scrapers_lat/dns-domain-intelligence-scraper

Resolve full DNS records for any domain via DNS-over-HTTPS: A, AAAA, MX, NS, TXT, SOA, CAA, plus parsed SPF, DMARC, DKIM, DNSSEC and mail-provider intelligence. Ideal for OSINT, attack-surface mapping, email-security audits and KYB. Export to JSON, CSV or Excel.

DMARC, SPF & DKIM Validator

andok/dmarc-spf-dkim-validator

Validate email authentication DNS records to prevent spoofing and ensure high email deliverability for your domains.

Bulk DNS Lookup, SPF DMARC DKIM Email Check

thoob/dns-bulk-lookup

Resolves A, AAAA, MX, NS, TXT, CNAME, and SOA records for many domains at once over DNS-over-HTTPS (Cloudflare, with Google fallback), and parses SPF, DMARC, and optional DKIM. Deterministic and fast. Billed only per domain that returns DNS data.

Bulk-check domains for email setup & authentication over DNS: MX + provider, SPF, DMARC policy, DKIM selectors, with a deliverability score. One JSON row per domain.

Bulk email authentication audit. Parses SPF, DMARC, and DKIM records, returns deliverability score (0-100), and step-by-step remediation actions per domain.