Mail Domain Check

Web3 Email Authentication Operations Kit

Free sample
Markdown delivery
Version 1.0.0

Thirty-minute kickoff

  1. Name one owner for the visible From domain.
  2. List every production message stream.
  3. Mark mail that can affect access or assets.
  4. Capture a delivered header for each stream.
  5. Record aligned DKIM and SPF identities.
  6. Freeze enforcement until unknown paths are classified.
DNS change worksheet
Change ID
Domain
Current exact value
Proposed exact value
Validation queries
Monitoring window
Rollback trigger
Rollback operator
Download the Markdown sample View the complete 13-section kit

Three worksheets you can use now

The sample separates message generation, provider handoff, receiver evidence, and DNS change ownership. It does not request an email address, mailbox, provider account, token, wallet connection, or payment.

  • Run a thirty-minute kickoff before changing DMARC policy.
  • Create one inventory row per message stream, not per vendor.
  • Record the literal rollback value and operator before a DNS change.
stream_id,business_purpose,criticality,
visible_from_domain,provider,environment,
return_path_domain,dkim_domain,dkim_selector,
spf_aligned,dkim_aligned,last_header_date,
failover_path,owner,status,notes