>• ipconfig.is

SPF, DKIM and DMARC checker

Is a domain's email set up right? SPF is evaluated the way a receiver does it, including the 10-lookup limit; DMARC on the organisational domain; DKIM at common selectors; MX health, MTA-STS, TLS-RPT and BIMI.

What it checks

• SPF with the 10-lookup limit
• DMARC on the organisational domain
• DKIM at common selectors
• MX health, MTA-STS, TLS-RPT, BIMI

The same check from the command line

curl "ipconfig.is/mail?domain=github.com"

All tools

• Domain security audit: TLS certificate, chain and versions
• DNS lookup: 20 record types, A to DNAME
• DNS propagation checker: 12 public resolvers worldwide
• TLS certificate checker: Validity and days remaining
• SPF, DKIM and DMARC checker: SPF with the 10-lookup limit
• HTTP redirect checker: Every redirect hop
• Domain WHOIS lookup: Registrar and registration date
• Subnet calculator: Network, broadcast and usable range

Every tool is also a key-free API call: see the API reference.