109 lines
3.8 KiB
TOML
109 lines
3.8 KiB
TOML
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# ============================================================================
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# Stalwart config — the over-engineered wiring: Postgres + Redis + Garage S3.
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# ============================================================================
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# THIS IS A STRAWMAN. Stalwart's config schema shifts between releases and a
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# lot of runtime config moves into the admin store after first boot. Treat
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# every key here as "verify against the version you pinned" — the same pitfall
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# the federatedSocial repo learned the hard way. Pin the image tag once it works.
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#
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# Secrets come in via %{env:NAME}% so this file stays commit-safe.
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# ============================================================================
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[server]
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hostname = "%{env:STALWART_HOSTNAME}%"
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# ----------------------------------------------------------------------------
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# Listeners — all bind inside the sidecar netns (tailnet only). The public
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# edge is caddy/ (layer 4). PROXY protocol carries the real client IP across
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# the proxy hop, which mail reputation (SPF/DNSBL/greylisting) depends on.
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# ----------------------------------------------------------------------------
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[server.listener.smtp]
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bind = ["[::]:25"]
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protocol = "smtp"
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[server.listener.submission]
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bind = ["[::]:587"]
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protocol = "smtp"
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[server.listener.submissions]
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bind = ["[::]:465"]
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protocol = "smtp"
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tls.implicit = true
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[server.listener.imap]
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bind = ["[::]:143"]
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protocol = "imap"
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[server.listener.imaptls]
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bind = ["[::]:993"]
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protocol = "imap"
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tls.implicit = true
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[server.listener.http]
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# JMAP, autoconfig/autodiscover, and the web admin. Fronted by the existing
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# layer-7 Caddy vhost (mail.infinidim.net), not the L4 proxy.
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bind = ["[::]:8080"]
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protocol = "http"
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# Trust the PROXY-protocol header only from the tailnet hop (CGNAT range).
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[server.proxy]
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trusted-networks = ["100.64.0.0/10"]
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# ----------------------------------------------------------------------------
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# Stores — three backends because we can.
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# ----------------------------------------------------------------------------
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[store.pg]
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type = "postgresql"
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host = "%{env:DB_HOST}%"
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port = 5432
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database = "%{env:STALWART_DB_NAME}%"
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user = "%{env:STALWART_DB_USER}%"
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password = "%{env:STALWART_DB_PASSWORD}%"
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[store.redis]
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type = "redis"
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urls = ["%{env:REDIS_URL}%"]
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[store.s3]
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type = "s3"
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endpoint = "%{env:S3_ENDPOINT}%"
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region = "%{env:S3_REGION}%"
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bucket = "%{env:S3_BUCKET}%"
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access-key = "%{env:S3_ACCESS_KEY}%"
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secret-key = "%{env:S3_SECRET_KEY}%"
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# Which store backs which concern.
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[storage]
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data = "pg" # accounts, mailboxes, metadata, indexes
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fts = "pg" # full-text search
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blob = "s3" # message bodies + attachments → Garage
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lookup = "redis" # rate limits, caches, token revocation (distributed)
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directory = "internal"
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[directory.internal]
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type = "internal"
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store = "pg"
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# ----------------------------------------------------------------------------
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# Outbound — relay via smarthost when the VPS blocks direct :25.
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# ----------------------------------------------------------------------------
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[queue.outbound]
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# If STALWART_SMARTHOST is set, route everything through it; else direct MX.
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next-hop = "%{env:STALWART_SMARTHOST}%"
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# ----------------------------------------------------------------------------
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# TLS — Stalwart terminates mail TLS itself (the L4 proxy is pass-through),
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# so it needs the cert. DNS-01 works fine behind the proxy (no inbound needed).
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# Swap to a mounted certbot cert by pointing [certificate] at files instead.
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# ----------------------------------------------------------------------------
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[acme.le]
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directory = "https://acme-v02.api.letsencrypt.org/directory"
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challenge = "dns-01"
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provider = "%{env:STALWART_ACME_PROVIDER}%"
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secret = "%{env:STALWART_ACME_TOKEN}%"
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domains = ["%{env:STALWART_HOSTNAME}%"]
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[authentication.fallback-admin]
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user = "admin"
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secret = "%{env:STALWART_FALLBACK_ADMIN_SECRET}%"
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