Acutis Email deliverability check
Enter a domain for the full mail picture — MX servers and their IPs, the email provider, and all three auth records (SPF, DKIM, DMARC) — plus a blocklist (DNSBL) check on the mail-server IPs. All in your browser.
What each record does
- MX — the servers that receive your mail. Lower priority number = tried first; same priority = load-balanced.
- SPF — lists who is allowed to send as your domain. Missing SPF = far more spoofing and spam-foldering.
- DKIM — cryptographically signs your mail. We probe the common selectors (a domain can have several); if none are found it may use a custom selector we didn't guess.
- DMARC — tells receivers what to do when SPF/DKIM fail.
p=rejectorp=quarantineis strong;p=noneis monitor-only; missing means no policy at all. - Blocklist — if a sending IP is on a DNSBL, your mail gets bounced or junked. Most relevant for self-hosted mail (for Google/Microsoft the IPs aren't yours).
Auth records are clean — but is mail actually reaching your machine?
DNS can be perfect while the real problem is your network or your computer blocking the connection. Acutis Go runs the full check — network, DNS and your own machine — in 60 seconds. Free.
Get Acutis Go — freeMore IT tools: DNS lookup · IP blacklist · Domain WHOIS · SSL checker · All tools →