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CHAPTER 20 · BOTH EDITIONS
Authenticate your email
Email authentication helps receiving services evaluate whether mail is authorized. Use the exact records supplied by each sending provider and confirm the result before changing your DMARC policy.
Put it to work
- List every legitimate sender for your domain. Copy current DNS records into a rollback note and open the sender's official domain-authentication instructions.
- SPF: review authorized sending services; do not create a second SPF record at the same hostname. DKIM: publish the provider's exact selector and value, then verify in its dashboard.
- DMARC: review alignment and reports with your mail administrator. Begin with monitoring appropriate to your setup, fix legitimate senders, then plan enforcement. Send a test and inspect authentication results.
TRADE EDITION
Email authentication worksheet
Include invoicing, support, CRM, and marketing senders in the inventory.
Starter files are ready to adapt. CSV files open in spreadsheet apps. Printable pages can be filled locally and printed; they do not save or submit entries.
DIRECT SALES EDITION
Email authentication worksheet
Use an address and domain you control. Check company policy before using brand names in domains or sender names.
Starter files are ready to adapt. CSV files open in spreadsheet apps. Printable pages can be filled locally and printed; they do not save or submit entries.
DNS values are intentionally blank. Use records from your actual provider; never paste illustrative values into live DNS.