LESSONS.md gains 8-12: container has no IPv6 (AAAA fails before A, no
fallback), host IPv6 != container IPv6, VPS blocks all outbound SMTP
ports (relay over tailnet), sidecar needs a source ACL grant to
initiate, and MtaRoute changes only take effect on restart.
CLAUDE.md and .env.example warn that the smarthost address must be an
IPv4 literal or tailnet IP, never a dual-stack hostname. acl-snippet
adds the tag:stalwart -> tag:mail outbound grant.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
v0.16 dropped TOML/%{env}% for a JSON datastore-only config, with all other
settings living in Postgres. This migrates the deployment and fixes the
fallout found during the first real run.
- config/config.json: v0.16 JSON bootstrap (root = PostgreSql datastore;
DB password via the EnvironmentVariable secret type, so it stays
commit-safe). Replaces the now-dead config.toml.
- docker-compose.yml: bind-mount config.json -> /etc/stalwart/config.json
(the image's --config path) and use a named volume for /var/lib/stalwart;
the old anonymous volumes were orphaned on every recreate ("lost settings").
Drop the dead config.toml mount.
- .gitignore: exclude local operational artifacts that hold real secrets +
mail data (_backup/, _validate/, *.dump, export/). config/config.json is
intentionally tracked (secret-free).
- CLAUDE.md: "Lessons learned — v0.16 first real run" — config model, the
anonymous-volume trap, full-FQDN store endpoints, per-listener PROXY trust,
one-instance-per-store, recovery mode + argon2 password reset, ACME, backups.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The xcaddy/Go compile burns ~1GB RAM this VPS can't spare (per ~/docs/caddy.md
"Custom Binary"). Pull the prebuilt L4-enabled binary from the Caddy build
server instead and swap it over the stock binary in the official image. Built
and verified: caddy v2.11.3 with layer4.handlers.proxy + proxy_protocol.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Over-engineered play stack for infinidim.net — Stalwart wired into the shared
Postgres + Redis + Garage S3 over the tailnet, with no WAN presence. Public
mail ports are fronted by a separate caddy-l4 layer-4 proxy (caddy/) that can
run on any tailnet host tagged tag:reverse-proxy — decoupled from the mailbox.
- docker-compose.yml: ts-stalwart sidecar + stalwart, backends via MagicDNS
- config/config.toml: PG (data/fts) + Redis (lookup) + S3 (blob) strawman
- caddy/: xcaddy build with caddy-l4, JSON layer-4 mail proxy, own compose
- acl-snippet.hujson: tag:stalwart owner + backend/edge grants
- .env.example + gitignored .env (pulled from shared infra)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
