Toolbox help
Every check and every finding explained
Here you find the complete documentation. Start with the first steps or jump straight to the check you need. The app itself is in German, so button names are given as they appear in the app.
Getting started
Getting started
Install the iw Toolbox on your Mac, run your first DNS lookup on first launch and find out where the license and updates live.
Read moreThe interface
How the iw Toolbox window is laid out: sidebar with categories, favourites, search, recently checked inputs, status bar and light or dark mode.
Read moreReading results
What the traffic-light colours of the findings mean, what the Ergebnis, Rohdaten and Befehl tabs show and how to copy or export a report.
Read moreDNS
DNS Lookup and Reverse DNS
Query any record type, read DNSSEC data along the way, pick the resolver per query and check PTR records with forward confirmation.
Read moreDNSSEC check
The DNSSEC check validates the chain of trust from the root down to the domain, signatures included, and explains each error with the next step.
Read morePropagation and name servers
DNS propagation compares the answers of 20 resolvers worldwide; the name server check tests delegation, serials, recursion and TCP for every server.
Read moreDNS trace and zone transfer
The DNS trace resolves a name from the root servers down like dig +trace; the zone transfer test shows whether your zone is exposed via AXFR.
Read moreFull domain report
The full domain report runs a domain through every DNS and mail check, sums it up in an overview table and creates a PDF you can hand to customers.
Read moreBulk checks, watching and history
Run one check for a whole list of domains, have domains checked at regular intervals and see in the history what changed since the last run.
Read moreMX Lookup and Mail Domain Report
MX Lookup shows a domain's mail servers; the Mail Domain Report checks MX, SPF, DMARC, DKIM, BIMI and MTA-STS in a single run.
Read moreSPF Check
The SPF check resolves the SPF record including all includes, counts DNS lookups against the limit of 10 and lists every authorized IP range.
Read moreDMARC Check
The DMARC check shows your domain's policy, subdomain rules and report recipients, and checks whether external recipients are allowed to receive reports.
Read moreDKIM and BIMI Check
The DKIM check finds your domain's keys and checks their length; the BIMI check verifies brand logo, certificate and the required DMARC policy.
Read moreMTA-STS and TLS-RPT
The check verifies your domain's MTA-STS record, policy file and MX coverage, plus the TLS-RPT record for reports about delivery problems.
Read moreBlacklist Check
The blacklist check tests an IP or a domain's mail servers against 35 DNS blacklists. What the results mean and why Spamhaus needs a DQS key.
Read moreSMTP Test
The SMTP test connects to your mail servers and checks banner, EHLO, STARTTLS and certificate. Plus why port 25 is often blocked by your ISP.
Read moreNetwork
WHOIS / RDAP and IP Info
WHOIS / RDAP shows registrar, term, status and holder of a domain, IP or AS number. IP Info returns reverse DNS, AS, prefix, country and network owner.
Read moreTLS Certificate and HTTP Check
The TLS certificate tool reads names, issuer, validity and key of a server certificate. The HTTP check follows redirects and checks HTTPS and security headers.
Read morePort Check, Ping and Traceroute
Port check shows open, closed and filtered TCP ports, ping measures response time and packet loss, and traceroute shows the route to a host.
Read moreMore
Settings
All iw Toolbox settings: license, MCP server, appearance, resolver, DNS over HTTPS, timeout, Spamhaus DQS key and updates.
Read moreMCP Server for AI Assistants
Through the MCP server, AI assistants like Claude Code use the DNS, mail and network checks of the iw Toolbox directly. Here's how to set it up.
Read moreLicense
DNS Lookup, MX Lookup, Reverse DNS and all developer tools are free. A license unlocks the other checks. Here's how to request one and enter it in the app.
Read moreUpdates
The iw Toolbox for macOS keeps itself up to date with Sparkle. How the automatic check works and how to look for updates manually.
Read morePrivacy in the App
Which connections the iw Toolbox makes, what it sends and what it stores locally. No tracking, no telemetry, no detour through third-party servers.
Read moreIP Unban
After too many failed logins, inwendo's servers block your IP. The IP unban tool releases it again right away, no license required.
Read more