coolify/templates/compose/docker-mailserver.yaml

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YAML

# documentation: https://docker-mailserver.github.io/docker-mailserver/latest/
# slogan: A fullstack, production-ready, self-hosted mail server (SMTP, IMAP, DKIM, antispam, antivirus, etc.)
# category: email
# tags: email,mail,smtp,imap,postfix,dovecot,dkim,spf,dmarc,antispam
# logo: svgs/docker-mailserver.svg
# port: 25
services:
docker-mailserver:
image: docker.io/mailserver/docker-mailserver:14.0.0
hostname: ${MAIL_HOSTNAME:?mail}
domainname: ${MAIL_DOMAIN:?}
ports:
- "25:25"
- "465:465"
- "587:587"
- "993:993"
volumes:
- mail-data:/var/mail
- mail-state:/var/mail-state
- mail-logs:/var/log/mail
- mail-config:/tmp/docker-mailserver
# Mount Traefik's ACME certificate store (read-only)
# DMS natively reads acme.json and auto-reloads on cert renewal
- /data/coolify/proxy/acme.json:/etc/letsencrypt/acme.json:ro
environment:
# Postmaster account — the initial admin mailbox created on first boot
- POSTMASTER_ADDRESS=postmaster@${MAIL_DOMAIN:?}
- POSTMASTER_PASSWORD=${SERVICE_PASSWORD_POSTMASTER}
# General configuration
- OVERRIDE_HOSTNAME=${MAIL_HOSTNAME:?mail}.${MAIL_DOMAIN:?}
- LOG_LEVEL=${LOG_LEVEL:-info}
- SUPERVISOR_LOGLEVEL=${SUPERVISOR_LOGLEVEL:-warn}
- TZ=${TZ:-UTC}
- ONE_DIR=1
- PERMIT_DOCKER=none
# TLS — pre-configured for Coolify's Traefik proxy
# DMS reads Traefik's acme.json and extracts the matching certificate
- SSL_TYPE=letsencrypt
- SSL_DOMAIN=${MAIL_HOSTNAME:?mail}.${MAIL_DOMAIN:?}
# DKIM / SPF / DMARC
- ENABLE_OPENDKIM=${ENABLE_OPENDKIM:-1}
- ENABLE_OPENDMARC=${ENABLE_OPENDMARC:-1}
- ENABLE_POLICYD_SPF=${ENABLE_POLICYD_SPF:-1}
# Optional features — disabled by default to save resources
- ENABLE_CLAMAV=${ENABLE_CLAMAV:-0}
- ENABLE_SPAMASSASSIN=${ENABLE_SPAMASSASSIN:-0}
- SPAMASSASSIN_SPAM_TO_INBOX=${SPAMASSASSIN_SPAM_TO_INBOX:-1}
- MOVE_SPAM_TO_JUNK=${MOVE_SPAM_TO_JUNK:-1}
# Fail2Ban — requires NET_ADMIN capability
- ENABLE_FAIL2BAN=${ENABLE_FAIL2BAN:-1}
# Relay host — useful when ISP blocks port 25 outbound
- DEFAULT_RELAY_HOST=${DEFAULT_RELAY_HOST:-}
# Rate limiting
- POSTFIX_MESSAGE_SIZE_LIMIT=${POSTFIX_MESSAGE_SIZE_LIMIT:-25600000}
- ENABLE_QUOTAS=${ENABLE_QUOTAS:-1}
- POSTFIX_MAILBOX_SIZE_LIMIT=${POSTFIX_MAILBOX_SIZE_LIMIT:-0}
# Fetchmail — pull mail from external accounts
- ENABLE_FETCHMAIL=${ENABLE_FETCHMAIL:-0}
- FETCHMAIL_POLL=${FETCHMAIL_POLL:-300}
# ManageSieve — client-side mail filtering rules (Thunderbird, etc.)
- ENABLE_MANAGESIEVE=${ENABLE_MANAGESIEVE:-0}
cap_add:
- NET_ADMIN
- SYS_PTRACE
entrypoint:
- /bin/bash
- -c
- |
# Create the postmaster account on first boot if it does not exist
if [ ! -f /tmp/docker-mailserver/postfix-accounts.cf ] || \
! grep -q "^postmaster@" /tmp/docker-mailserver/postfix-accounts.cf 2>/dev/null; then
setup email add "postmaster@${MAIL_DOMAIN}" "${POSTMASTER_PASSWORD}"
fi
# Start the mail server
exec /usr/bin/dumb-init -- supervisord -c /etc/supervisor/supervisord.conf
stop_grace_period: 1m
healthcheck:
test: ["CMD-SHELL", "ss -tlnp | grep -q ':25 '"]
interval: 30s
timeout: 10s
retries: 5
start_period: 120s