Technical guides for every NetTools.tech tool — what it does, how it works, how to read the results and how to troubleshoot — plus articles for system administrators, DevOps engineers and security professionals.
Tool guideEmail Tools
What each DMARC tag does, how the NetTools.tech DMARC generator builds and validates the record locally, and how to roll out a policy from p=none to p=reject without blocking legitimate mail.
Tool guideEmail Tools
What DMARC is, how it builds on SPF and DKIM alignment, how the NetTools.tech DMARC Lookup reads _dmarc records, falls back to parent domains and checks external report authorization.