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LambdaMail/docker-compose.yaml
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x-logging: &default-logging
driver: json-file
options: { max-size: "10m", max-file: "3" }
x-restart: &restart unless-stopped
services:
# ---------------------------------------------------------------- DB
db:
image: postgres:16-alpine
restart: *restart
logging: *default-logging
environment:
POSTGRES_DB: ${POSTGRES_DB:?required}
POSTGRES_USER: ${POSTGRES_USER:?required}
POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?required} # no default: fail fast
POSTGRES_INITDB_ARGS: "--data-checksums"
command: >
postgres -c shared_buffers=256MB -c max_connections=200
-c wal_level=replica
volumes:
- postgres_data:/var/lib/postgresql/data
healthcheck:
test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
interval: 10s
timeout: 5s
retries: 5
start_period: 30s
mem_limit: 1g
cpus: 1.0
networks: [backend]
# ------------------------------------------------------------- REDIS
redis:
image: redis:7-alpine
restart: *restart
logging: *default-logging
command: >
redis-server --appendonly yes --appendfsync everysec
--requirepass ${REDIS_PASSWORD:?required}
--maxmemory 384mb --maxmemory-policy noeviction
# REDIS_PASSWORD has to exist inside the container for the healthcheck:
# $${VAR} expands in the container shell, not in Compose.
environment:
REDIS_PASSWORD: ${REDIS_PASSWORD}
volumes: [redis_data:/data]
healthcheck:
test: ["CMD-SHELL", "redis-cli --no-auth-warning -a $${REDIS_PASSWORD} ping | grep -q PONG"]
interval: 10s
timeout: 5s
retries: 5
mem_limit: 512m
cpus: 0.5
networks: [backend]
# ----------------------------------------------------------- MIGRATE
migrate:
image: migrate/migrate:v4.17.1
restart: "no"
logging: *default-logging
volumes: ["./migrations:/migrations"]
depends_on:
db: { condition: service_healthy }
entrypoint:
- migrate
- -path=/migrations
- -database
- postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}?sslmode=disable
- up
networks: [backend]
# ------------------------------------------------------------ RSPAMD
rspamd:
image: ghcr.io/rspamd/rspamd:3.9
restart: *restart
logging: *default-logging
environment:
RSPAMD_REDIS_SERVERS: redis
RSPAMD_REDIS_PASSWORD: ${REDIS_PASSWORD}
volumes:
- ./config/rspamd:/etc/rspamd/local.d:ro
- rspamd_data:/var/lib/rspamd
depends_on:
redis: { condition: service_healthy }
healthcheck:
test: ["CMD-SHELL", "rspamadm control stat >/dev/null 2>&1 || exit 1"]
interval: 30s
retries: 3
mem_limit: 768m
networks: [backend, egress] # egress: RBL/DNSBL lookups and fuzzy storage
# ------------------------------------------------------------ CLAMAV
clamav:
image: clamav/clamav:1.3
restart: *restart
logging: *default-logging
volumes: [clamav_data:/var/lib/clamav]
healthcheck:
test: ["CMD-SHELL", "clamdcheck.sh || exit 1"]
interval: 60s
retries: 5
start_period: 300s # the initial signature load is slow
mem_limit: 2g # ClamAV genuinely needs this
networks: [backend, egress] # egress: freshclam signature updates
# -------------------------------------------------------------- AUTH
auth:
build: { context: ./services/auth }
restart: *restart
logging: *default-logging
environment:
PORT: 3001
DATABASE_URL: postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}?sslmode=disable
REDIS_URL: redis://:${REDIS_PASSWORD}@redis:6379
JWT_SECRET: ${JWT_SECRET:?required}
LAMBDAMAIL_MASTER_KEY: ${LAMBDAMAIL_MASTER_KEY:?required} # KEK for sealed secrets
CLOUDFLARE_API_TOKEN: ${CLOUDFLARE_API_TOKEN:-}
PRIMARY_MAIL_HOST: ${PRIMARY_MAIL_HOST:?required}
PUBLIC_IPV4: ${PUBLIC_IPV4:?required}
PUBLIC_IPV6: ${PUBLIC_IPV6:-}
depends_on:
db: { condition: service_healthy }
redis: { condition: service_healthy }
migrate: { condition: service_completed_successfully }
healthcheck:
test: ["CMD", "node", "-e", "fetch('http://localhost:3001/health/ready').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"]
interval: 15s
timeout: 5s
retries: 3
start_period: 20s
mem_limit: 512m
networks: [backend, egress] # egress: Cloudflare API. Without it DNS sync
# fails silently, since backend is internal.
# ----------------------------------------------------------- STORAGE
storage:
build: { context: ./services/storage }
restart: *restart
logging: *default-logging
environment:
PORT: 3002
DATABASE_URL: postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}?sslmode=disable
REDIS_URL: redis://:${REDIS_PASSWORD}@redis:6379
STORAGE_DRIVER: ${STORAGE_DRIVER:-local}
STORAGE_LOCAL_PATH: /var/lambdamail/mails
S3_ENDPOINT: ${S3_ENDPOINT:-}
S3_BUCKET: ${S3_BUCKET:-}
S3_ACCESS_KEY: ${S3_ACCESS_KEY:-}
S3_SECRET_KEY: ${S3_SECRET_KEY:-}
volumes: [mail_storage:/var/lambdamail/mails]
depends_on:
db: { condition: service_healthy }
redis: { condition: service_healthy }
migrate: { condition: service_completed_successfully }
healthcheck:
test: ["CMD", "node", "-e", "fetch('http://localhost:3002/health/ready').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"]
interval: 15s
retries: 3
start_period: 20s
mem_limit: 1g
cpus: 1.0
networks: [backend, egress] # egress: external S3 when STORAGE_DRIVER=s3
# --------------------------------------------------------- PROTOCOLS
protocols:
build: { context: ./services/protocols }
restart: *restart
logging: *default-logging
ports:
- "25:25" # SMTP MX
- "587:587" # Submission (STARTTLS)
- "465:465" # Submission (implicit TLS)
- "143:143" # IMAP (STARTTLS)
- "993:993" # IMAPS
- "110:110" # POP3 (STARTTLS)
- "995:995" # POP3S
- "4190:4190" # ManageSieve
environment:
DATABASE_URL: postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}?sslmode=disable
REDIS_URL: redis://:${REDIS_PASSWORD}@redis:6379
RSPAMD_URL: http://rspamd:11333
CLAMAV_ADDR: clamav:3310
PRIMARY_MAIL_HOST: ${PRIMARY_MAIL_HOST:?required}
MAIL_DOMAIN: ${MAIL_DOMAIN:?required}
LAMBDAMAIL_MASTER_KEY: ${LAMBDAMAIL_MASTER_KEY:?required} # required for DKIM keys
# --- TLS ---
TLS_MODE: ${TLS_MODE:-traefik} # traefik | acme
TRAEFIK_ACME_DIR: /etc/traefik # the DIRECTORY, not the file (section 8.2)
TRAEFIK_ACME_FILENAME: acme.json
CERT_POLL_INTERVAL_SECONDS: "60"
# --- Policy ---
MTA_STS_MODE: ${MTA_STS_MODE:-testing} # promote to enforce once TLS-RPT is clean
# DANE requires TLS_MODE=acme; the preflight refuses the combination
# with Traefik-managed certificates (section 5.1).
OUTBOUND_DANE_ENABLED: ${OUTBOUND_DANE_ENABLED:-false}
OUTBOUND_MTA_STS_ENABLED: "true"
DNSSEC_RESOLVER: ${DNSSEC_RESOLVER:-1.1.1.1:53}
# ARC only earns its keep on a host that forwards mail onward.
ARC_SEAL_ENABLED: ${ARC_SEAL_ENABLED:-false}
# Smarthost, for providers that block outbound port 25 (section 10.4).
# Setting RELAY_HOST also adds the relay to the published SPF record.
RELAY_HOST: ${RELAY_HOST:-}
RELAY_PORT: ${RELAY_PORT:-587}
RELAY_USER: ${RELAY_USER:-}
RELAY_PASS: ${RELAY_PASS:-}
MAX_MESSAGE_BYTES: "52428800"
# --- Self-managed ACME (mode B, section 8.3) ---
ACME_EMAIL: ${ACME_EMAIL:-}
ACME_DIRECTORY_URL: ${ACME_DIRECTORY_URL:-}
# --- DNS automation ---
CLOUDFLARE_API_TOKEN: ${CLOUDFLARE_API_TOKEN:-}
PUBLIC_IPV4: ${PUBLIC_IPV4:?required}
PUBLIC_IPV6: ${PUBLIC_IPV6:-}
DNS_SYNC_INTERVAL_SECONDS: "21600" # 6 h drift detection
PROTOCOLS_SPOOL_DIR: /var/lambdamail/spool
volumes:
# Bind-mount the DIRECTORY: Traefik's atomic rename breaks a
# file-scoped mount and the watcher would go blind (section 8.2).
- ${COOLIFY_PROXY_DIR:-/data/coolify/proxy}:/etc/traefik:ro
- protocols_spool:/var/lambdamail/spool
depends_on:
db: { condition: service_healthy }
redis: { condition: service_healthy }
migrate: { condition: service_completed_successfully }
rspamd: { condition: service_started }
clamav: { condition: service_started }
healthcheck:
test: ["CMD", "/app/lambdamail-protocols", "healthcheck"]
interval: 15s
timeout: 5s
retries: 3
start_period: 30s
mem_limit: 1g
cpus: 1.5
ulimits:
nofile: { soft: 65536, hard: 65536 }
networks: [backend, egress] # egress: port 25 delivery, DNSSEC, MTA-STS fetch
# -------------------------------------------------------------- WEB
web:
build: { context: ./services/webmail }
restart: *restart
logging: *default-logging
environment:
PORT: 3000
AUTH_SERVICE_URL: http://auth:3001
STORAGE_SERVICE_URL: http://storage:3002
NEXT_PUBLIC_APP_URL: https://${WEBMAIL_HOST:?required}
# Isolation of the two surfaces (section 14.1). With ADMIN_HOST set the
# console answers only on that host; otherwise it lives under
# ${WEBMAIL_HOST}/admin.
ADMIN_HOST: ${ADMIN_HOST:-}
TOTP_ISSUER: ${TOTP_ISSUER:-LambdaMail}
MFA_CHALLENGE_TTL_SECONDS: "300"
ADMIN_SESSION_TTL_SECONDS: "28800" # 8 h
ADMIN_STEPUP_INTERVAL_SECONDS: "900" # re-require TOTP every 15 min
USER_SESSION_TTL_SECONDS: "2592000" # 30 d
TRUSTED_DEVICE_TTL_SECONDS: "2592000"
depends_on:
auth: { condition: service_healthy }
storage: { condition: service_healthy }
labels:
- traefik.enable=true
# With the service on two networks Traefik may route via the wrong one
# and return 504. This pins it to the proxy network.
- traefik.docker.network=${COOLIFY_PROXY_NETWORK:-coolify}
# Webmail (/user/*)
- traefik.http.routers.lm-web.rule=Host(`${WEBMAIL_HOST}`)
- traefik.http.routers.lm-web.tls.certresolver=letsencrypt
- traefik.http.services.lm-web.loadbalancer.server.port=3000
# Admin console. Nested fallback: with no ADMIN_HOST the console lives
# under the webmail host at /admin. Never use a fictitious host as the
# default - Traefik would loop on ACME for it and risk a rate limit.
- traefik.http.routers.lm-admin.rule=Host(`${ADMIN_HOST:-${WEBMAIL_HOST}}`) && PathPrefix(`/admin`)
- traefik.http.routers.lm-admin.priority=20
- traefik.http.routers.lm-admin.tls.certresolver=letsencrypt
# MTA-STS needs a valid certificate on mta-sts.<domain>
- traefik.http.routers.lm-mtasts.rule=Host(`mta-sts.${MAIL_DOMAIN}`)
- traefik.http.routers.lm-mtasts.tls.certresolver=letsencrypt
# Autoconfig (Thunderbird)
- traefik.http.routers.lm-autoconfig.rule=Host(`autoconfig.${MAIL_DOMAIN}`)
- traefik.http.routers.lm-autoconfig.tls.certresolver=letsencrypt
# CRITICAL: forces Traefik to issue a certificate for the mail host.
# Without this router mail.<domain> never appears in acme.json and every
# TLS listener comes up without a certificate (section 8.2, trap 2).
- traefik.http.routers.lm-mailhost.rule=Host(`${PRIMARY_MAIL_HOST}`)
- traefik.http.routers.lm-mailhost.tls.certresolver=letsencrypt
mem_limit: 512m
networks: [backend, proxy]
volumes:
postgres_data:
redis_data:
mail_storage:
rspamd_data:
clamav_data:
protocols_spool:
networks:
backend:
internal: true # no route to the internet: internal traffic only
# Controlled egress: only the services that must reach the internet join it
# (auth -> Cloudflare API; protocols -> remote MX, DNS, MTA-STS fetch;
# rspamd -> RBLs; clamav -> freshclam; storage -> external S3).
egress:
driver: bridge
proxy:
external: true
name: ${COOLIFY_PROXY_NETWORK:-coolify}