04e3d5cb54
- 06-06-SUMMARY.md: SPF/DKIM/DMARC verified green via Resend for tcopelandhomes.com - STATE.md: Plan 06 complete, completed_plans 24/24, Phase 6 fully complete - ROADMAP.md: Phase 6 marked complete (6/6 plans), completed 2026-03-21 - REQUIREMENTS.md: LEGAL-04 marked complete Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
112 lines
4.2 KiB
Markdown
112 lines
4.2 KiB
Markdown
---
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phase: 06-signing-flow
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plan: "06"
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subsystem: infra
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tags: [dns, spf, dkim, dmarc, email, resend, smtp]
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# Dependency graph
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requires:
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- phase: 06-signing-flow
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provides: signing email flow (plans 01-05) that sends real emails to clients
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provides:
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- SPF/DKIM/DMARC DNS records verified as passing for tcopelandhomes.com
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- Resend SMTP configured as sending provider
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- LEGAL-04 compliance gate satisfied — signing emails may now be sent to real clients
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affects: [signing-flow, future-client-outreach]
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# Tech tracking
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tech-stack:
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added: [resend (SMTP provider)]
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patterns: [DNS email authentication — SPF/DKIM/DMARC required before any client-facing email delivery]
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key-files:
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created: []
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modified:
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- src/app/api/sign/[token]/send/route.ts (domain updated to tcopelandhomes.com)
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- .env.local (RESEND_API_KEY added, SMTP vars updated)
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key-decisions:
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- "Resend chosen as SMTP provider — configured DKIM at resend._domainkey.tcopelandhomes.com"
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- "Domain confirmed as tcopelandhomes.com (not teressacopelandhomes.com) for sending"
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- "DNS propagation verified via MXToolbox — all three checks (SPF, DKIM, DMARC) green/pass"
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patterns-established:
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- "DNS gate pattern: automated dig checks (Task 1) followed by human MXToolbox verification (Task 2) before any client-facing email"
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requirements-completed: [LEGAL-04]
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# Metrics
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duration: 2 days (DNS propagation wait)
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completed: 2026-03-21
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---
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# Phase 6 Plan 06: DNS Email Authentication Summary
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**SPF/DKIM/DMARC verified green on MXToolbox for tcopelandhomes.com via Resend, satisfying LEGAL-04 compliance gate for client signing email delivery**
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## Performance
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- **Duration:** ~2 days (DNS propagation + human verification)
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- **Started:** 2026-03-20T17:41:00Z
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- **Completed:** 2026-03-21T15:42:52Z
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- **Tasks:** 2 (1 automated, 1 human-verify checkpoint)
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- **Files modified:** 2
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## Accomplishments
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- Automated dig checks confirmed current DNS state for teressacopelandhomes.com prior to configuration
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- Human configured Resend as SMTP provider, added DKIM TXT record at resend._domainkey.tcopelandhomes.com
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- All three MXToolbox checks (SPF, DKIM, DMARC) verified green/pass for tcopelandhomes.com
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- Domain updated in signing mailer from teressacopelandhomes.com to tcopelandhomes.com
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- Resend API key added to .env.local
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- LEGAL-04 compliance gate satisfied — signing links may now be sent to real clients
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Automated DNS verification check** - `32ea324` (chore)
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2. **Task 1 (update): Domain + Resend SMTP config** - `7121279` (feat)
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3. **Task 2: Human DNS configuration + MXToolbox verification gate** - human checkpoint, no code commit
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**Plan metadata:** (to be committed with SUMMARY.md)
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## Files Created/Modified
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- `.env.local` - RESEND_API_KEY and SMTP credentials updated for Resend provider
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- `src/app/api/sign/[token]/send/route.ts` - Sender domain updated to tcopelandhomes.com
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## Decisions Made
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- Resend chosen as the SMTP/email delivery provider — provides native DKIM signing support
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- Domain finalized as tcopelandhomes.com (not teressacopelandhomes.com) for sending address
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- DKIM selector is `resend` — TXT record at resend._domainkey.tcopelandhomes.com
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- DNS propagation confirmed complete via MXToolbox before resuming
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## Deviations from Plan
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None - plan executed exactly as written. Task 1 ran automated dig checks, Task 2 was a human-verify checkpoint that has now been satisfied.
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## Issues Encountered
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None. DNS propagation completed and all three records verified green. User confirmed with "dns verified".
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## User Setup Required
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**External services configured manually during this plan:**
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- Resend account and API key created
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- DKIM TXT record added at DNS provider: `resend._domainkey.tcopelandhomes.com`
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- SPF and DMARC records configured for tcopelandhomes.com
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- RESEND_API_KEY added to `.env.local`
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## Next Phase Readiness
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- LEGAL-04 is fully satisfied — signing emails to real clients are authorized
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- All Phase 6 plans (01-06) are complete — the signing flow is production-ready
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- Phase 7 can begin; no DNS or email blockers remain
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- Signing links may now be sent to real clients with proper audit trail
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---
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*Phase: 06-signing-flow*
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*Completed: 2026-03-21*
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