Free tool
Check a domain's email DNS
SPF with every include followed and counted, DMARC policy and reporting, MX, MTA-STS, and a scan of 36 common DKIM selectors. Findings are ranked by what to fix first.
Public DNS only. Nothing is stored. Know a DKIM selector from your headers? Add it after the domain: yourdomain.com s=hs1-12345.
Results
SPF
DMARC
DKIM
Mail servers and transport
Want the fix list, not just the findings?
Book a free 20-minute review and I'll go through the results with you. The written reports go further: every sending source, alignment, bulk-sender rules and a prioritised roadmap.