# ============================================================================
# tailwart — operator configuration  (Tailscale × Stalwart)
# ============================================================================
# Copy to .env and fill in. The mailbox stack (docker-compose.yml) and the
# edge proxy (caddy/docker-compose.yml) both read their values from here.
#
# Design: Stalwart runs as a Tailscale sidecar with NO WAN presence. A
# layer-4 (TCP) Caddy proxy on a public-IP host pipes the raw mail ports to it
# over the tailnet. The proxy can live on a DIFFERENT machine than the mailbox
# — that's the whole point. See CLAUDE.md.
# ============================================================================

# ----------------------------------------------------------------------------
# Tailscale — same OAuth client as the rest of the tailnet
# ----------------------------------------------------------------------------
# Sidecar advertises tag:stalwart. Assign that tag to the OAuth client on both
# the Devices/Core and Keys/AuthKeys scopes, or node creation 403s at boot.
TS_OAUTH_CLIENT_SECRET=
TS_TAILNET=tailfe8c.ts.net

# MagicDNS hostname for the Stalwart sidecar → reachable at
# ${STALWART_MAGIC_NAME}.${TS_TAILNET} over the tailnet.
STALWART_MAGIC_NAME=stalwart

# ----------------------------------------------------------------------------
# Mail identity
# ----------------------------------------------------------------------------
# The domain you send/receive for, and the public MX/hostname clients connect
# to (its A record points at the EDGE PROXY's public IP, not the mailbox).
STALWART_DOMAIN=infinidim.net
STALWART_HOSTNAME=mail.infinidim.net

# Initial admin password for the Stalwart web console (first boot only).
# Generate: openssl rand -base64 24
STALWART_FALLBACK_ADMIN_SECRET=

# ----------------------------------------------------------------------------
# Over-engineering, part 1/3 — Postgres (shared instance on the tailnet)
# ----------------------------------------------------------------------------
# Stalwart's metadata + full-text store. Create the role/db once (see README).
DB_MAGIC_NAME=the-record-prod
STALWART_DB_NAME=stalwart
STALWART_DB_USER=stalwart
# Generate: openssl rand -base64 24   (avoid / and + if you ever inline it in a URL)
STALWART_DB_PASSWORD=

# ----------------------------------------------------------------------------
# Over-engineering, part 2/3 — Redis (shared instance on the tailnet)
# ----------------------------------------------------------------------------
# Stalwart's in-memory store: distributed rate limits, caches, token revocation.
REDIS_MAGIC_NAME=slo-time-prod
# Use a dedicated logical DB index so we don't collide with the fediverse apps.
STALWART_REDIS_DB=3

# ----------------------------------------------------------------------------
# Over-engineering, part 3/3 — Garage S3 (shared instance on the tailnet)
# ----------------------------------------------------------------------------
# Stalwart's blob store: message bodies, attachments, sieve scripts.
# Reuses the shared Garage access key; needs its own bucket (see README).
GARAGE_MAGIC_NAME=garage
GARAGE_REGION=garage
GARAGE_ACCESS_KEY_ID=
GARAGE_SECRET_ACCESS_KEY=
STALWART_S3_BUCKET=stalwart-mail

# ----------------------------------------------------------------------------
# Outbound delivery
# ----------------------------------------------------------------------------
# Most VPS providers block outbound :25. If yours does, relay through a
# smarthost (host:port). Leave blank to attempt direct MX delivery.
#
# IMPORTANT: Use an IPv4 literal or a tailnet IP — never a dual-stack hostname.
# The container has no IPv6 and will NOT fall back from AAAA to A; any host
# with an AAAA record will fail immediately (os error 101). Relaying over the
# tailnet (100.x:587) sidesteps this entirely and also bypasses VPS SMTP blocks.
STALWART_SMARTHOST=

# ----------------------------------------------------------------------------
# TLS — Stalwart self-manages certs via ACME DNS-01 (works behind the L4 proxy)
# ----------------------------------------------------------------------------
# DNS provider + token for the DNS-01 challenge. Leave blank to instead mount
# a certbot-issued cert (see config/config.toml [certificate]).
STALWART_ACME_PROVIDER=
STALWART_ACME_TOKEN=