Spamjadoo
DNS Propagation Checker
What each major public resolver currently answers for a record. This tool is being built. Leave an address and we will tell you when it is live.
Live now
- MX LookupWhich servers receive mail for a domain, in priority order.
- SPF CheckerParse the SPF record and count DNS lookups against the limit of 10.
- DKIM CheckerFind the DKIM public key at a selector and check its size.
- DMARC CheckerRead the DMARC policy in plain language and flag weak settings.
- Blacklist CheckerTest an IP or domain against the major DNS blocklists.
- Reverse DNS LookupPTR record for an IP, with forward-confirmed check.