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Review pass over `1.4.0`…`1.9.1`: port 25 no longer shares the submission milter chain, DMARC reports are validated before they are stored, and the auto rate limit is correct for a non-default level-1 window. Schema migration `0010` (index only). Upgrading is a tag bump. Added: - SQLite migration `0010_send_log_app_login_index.sql` — - DMARC aggregate reports are accepted as **zip** as well as gzip or plain XML - e2e: `checkPort25ConfigCombinations` regenerates the Postfix configuration Changed: - README hero line and a **Positioning** block in `docs/product.md` record the Fixed: - The setup account's password is hashed at bcrypt cost `12` like every other - Login/setup rate limiter: protecting blocked buckets from eviction is now - `postqueue -p` output is bounded to 4 MiB (the timeout alone left the size of - [schema-migrations.md](docs/schema-migrations.md): the schema section was - postqueue reader is now time-bounded: `postqueue -p` runs under a 5-second … (11 more in CHANGELOG) Changed: - [roadmap.md](docs/roadmap.md) now carries everything the 2026-08-19 code - Extracted `internal/configsafe` — the empty-value and forbidden-character - Build, deploy and migration comments no longer cite the archived - Dropped the `parseDomainRateLimitForm` / `parseAppRateLimitForm` pass-through - Extracted shared helpers: `internal/atomicfile` (atomic temp-write+rename) and … (7 more in CHANGELOG) Removed: - Unused legacy asset `docs/assets/icon.png` (superseded by the four brand SVGs - Plan documents for already-shipped features: `domain-stats-auto-ratelimit`, Full detail: CHANGELOG.md (1.9.2).
78 lines
3.0 KiB
Markdown
78 lines
3.0 KiB
Markdown
# Plan: preflight (installation check page)
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**Status:** candidate
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**Date:** 2026-08-19
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**Version:** `1.x` MINOR; `candidate` until explicitly agreed.
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---
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## Goal
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A dedicated `/preflight` page (global-admin only) that runs infrastructure-level
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checks and helps the administrator confirm the instance is fully configured and
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ready to deliver mail. Each failed check shows an actionable recommendation
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(what to do or where to look).
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## Mockup
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[preflight](../assets/panel-redesign/panel/preflight.html), under the design
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contract of [panel-redesign.md](panel-redesign.md): **Server › Preflight**,
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path `/server/preflight` once the routes are renamed.
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## Scope
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**In:**
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- rDNS / PTR verification (reuse `dnscheck.Checker.checkServer`)
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- TLS certificate validity + hostname match (CN/SAN contains `SELFPOST_HOSTNAME`)
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- Port connectivity: 25, 465, and 587 (if `SUBMISSION_ENABLE`) — dial own
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public IP from inside the container, expect a 220 banner
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- HELO/EHLO banner — connect to localhost:25, verify Postfix announces
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`SELFPOST_HOSTNAME` (not `localhost` or a container ID)
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- Trusted proxy headers:
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- If `TRUSTED_PROXY_CIDR` set: verify peer IP is in range and
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`X-Forwarded-For` is present
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- If `PANEL_COOKIE_SECURE=true`: verify `X-Forwarded-Proto: https`
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- If `TRUSTED_PROXY_CIDR` empty: informational warning (panel exposed
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directly)
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- DKIM signing — OpenDKIM milter socket reachable (reuse `health.CheckSocket`)
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- Send test email — admin enters recipient address, system sends via
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localhost:25, shows queued/error result
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**Out:**
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- Per-domain DNS checks (SPF, DKIM TXT, DMARC) — those live on domain detail
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pages.
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- Delivery tracking of test email (only confirms local MTA accepted).
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## Done when
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An administrator can open `/preflight`, see a traffic-light summary of all
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infrastructure prerequisites, read specific fix instructions for any failures,
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and send a test email to verify end-to-end flow.
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## Risks
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- Port-connectivity check from inside the container may not reflect external
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reachability if NAT hairpin is unsupported (document limitation).
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- Test email requires at least one configured domain (or falls back to
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`postmaster@SELFPOST_HOSTNAME`).
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## Implementation checklist
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Target version cut: TBD (MINOR). One commit per step; code only after roadmap
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status is **agreed**. See [development.md](../development.md) § Plan checklists.
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- [ ] Port-connectivity helper (`internal/health/port.go`) — dial own IP, read
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SMTP banner — **Sonnet**
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- [ ] HELO banner check (connect localhost:25, parse 220 line) — **Sonnet**
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- [ ] Hostname-in-certificate check (extend or wrap `health.CheckCertificate`)
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— **Sonnet**
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- [ ] Handler `handlers_preflight.go` (assemble all checks, actionable
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recommendations) — **Sonnet**
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- [ ] Test-email handler (`POST /preflight/test-email`, `net/smtp` to
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localhost:25) — **Sonnet**
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- [ ] Template `preflight.html` (traffic-light cards + test-email form) —
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**Sonnet**
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- [ ] Routes in `web.go`, nav link — **Sonnet**
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