Setup And Migration Guides
Use these guides when you are implementing a provider setup, planning a migration, or following a recommended sequence for DNS and mail changes.
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Email Provider Setup Checker
Compare Google Workspace or Microsoft 365 mail DNS patterns.
Domain DNS Summary
See a broad one-page view of key DNS records for a domain.
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Guides
How to Check DNS Delegation Correctly
Learn how to check DNS delegation by comparing parent and child NS records, SOA responses, and glue records to find broken or inconsistent delegation.
How to Check If an IP or Domain Is Blacklisted
Learn how to check whether an IP address or domain is blacklisted, what DNSBL results really mean, and how to interpret blocklist findings before escalating.
How to Identify a Hosted Service from DNS Clues
Learn how to identify a hosted service or platform from DNS clues such as CNAME targets, MX patterns, TXT records, and provider-specific hostname conventions.
How to Read CAA Records Correctly
Learn how to read CAA records, understand issue, issuewild, and iodef tags, and tell whether certificate issuance is properly restricted for a domain.
How to Read CNAME Chains Correctly
Learn how to read CNAME chains, understand alias targets step by step, and spot stale, looping, or takeover-prone CNAME configurations.
How to Read DKIM Records Correctly
Learn how to read DKIM records, understand selector hostnames and key tags, and spot the difference between valid publishing and weak configurations.
How to Read DNS Audit Results
Learn how to read DNS audit results, separate important findings from noise, and turn a broad DNS report into a practical remediation plan.
How to Read NS Records Correctly
Learn how to read NS records, understand what they say about delegation, and spot signs of stale nameservers, mismatches, or broken authority.
How to Read SPF Records Correctly
Learn how to read an SPF record, understand mechanisms and qualifiers, spot risky syntax, and tell whether an SPF policy is too broad or too complex.
How to Read TXT Records Correctly
Learn how to read TXT records, tell verification values from policy records, and spot common TXT mistakes in email and service setups.
How to Read WHOIS and RDAP Results
Learn how to read WHOIS and RDAP results, including registrar data, domain statuses, nameservers, key dates, and common reasons records look incomplete.
How to Run a DNS Audit That Finds Real Issues
Learn how to run a DNS audit that checks core DNS, delegation, email security, stale records, and provider patterns without missing the issues that matter most.
How to Tell Which Email Provider a Domain Uses
Learn how to tell whether a domain uses Google Workspace, Microsoft 365, or another mail provider by reading MX, SPF, DKIM, and related DNS patterns.
How to Use a DNS Summary Effectively
Learn how to use a DNS summary view to spot missing records, provider patterns, email risks, and inconsistent DNS data before digging deeper.
DNS Records Required for Google Workspace (Complete Setup Guide)
Complete guide to Google Workspace DNS records including MX, SPF, DKIM, DMARC, and domain verification. Includes real record examples and setup best practices.
DNS Records Required for Microsoft 365 (Complete Setup Guide)
Complete guide to Microsoft 365 DNS records including MX, SPF, CNAME, DKIM, and DMARC. Includes real record examples and migration best practices.