Mailu
Host your own secure email server with this set of Docker images. Features include webmail, advanced routing, robust antispam, and comprehensive admin tools.
Take control of your email infrastructure with a comprehensive, open-source mail server packaged entirely as Docker images. This solution provides an easily deployable and highly maintainable alternative to complex traditional setups, ensuring you retain full ownership of your data without relying on proprietary software or hidden trackers.
Key benefits include:
- Standard and Advanced Email Protocols: Fully supports IMAP, IMAP+, SMTP, and Submission, complete with auto-configuration profiles, domain aliases, and custom routing.
- Robust Security and Antispam: Protects your communications with enforced TLS, DANE, MTA-STS, outgoing DKIM, and an integrated anti-virus scanner. It also blocks spam using auto-learning, greylisting, DMARC, and SPF.
- Comprehensive Access and Management: Offers multiple webmail interfaces, a dedicated administration panel, per-domain delegation, and user features like auto-replies and fetched accounts.
Directory Structure
mailu
certs
data
dkim
filter
mail
mailqueue
overrides
dovecot
nginx
postfix
roundcube
rspamd
redis
webmail
.env
docker-compose.yml
docker-compose.yml
services:
redis:
image: redis:alpine
restart: always
volumes:
- ./redis:/data
networks:
- default
front:
image: ghcr.io/mailu/nginx:2.0
restart: always
env_file: .env
logging:
driver: json-file
ports:
- "80:80"
- "443:443"
- "25:25"
- "465:465"
- "587:587"
- "110:110"
- "995:995"
- "143:143"
- "993:993"
volumes:
- ./certs:/certs
- ./overrides/nginx:/overrides:ro
networks:
- default
resolver:
image: ghcr.io/mailu/unbound:2.0
restart: always
env_file: .env
networks:
default:
ipv4_address: 192.168.203.254
admin:
image: ghcr.io/mailu/admin:2.0
restart: always
env_file: .env
volumes:
- ./data:/data
- ./dkim:/dkim
depends_on:
- redis
networks:
- default
imap:
image: ghcr.io/mailu/dovecot:2.0
restart: always
env_file: .env
volumes:
- ./mail:/mail
- ./overrides/dovecot:/overrides:ro
depends_on:
- front
networks:
- default
smtp:
image: ghcr.io/mailu/postfix:2.0
restart: always
env_file: .env
volumes:
- ./mailqueue:/queue
- ./overrides/postfix:/overrides:ro
depends_on:
- front
networks:
- default
antispam:
image: ghcr.io/mailu/rspamd:2.0
restart: always
env_file: .env
volumes:
- ./filter:/var/lib/rspamd
- ./dkim:/dkim:ro
- ./overrides/rspamd:/overrides:ro
depends_on:
- front
- redis
networks:
- default
webmail:
image: ghcr.io/mailu/webmail:2.0
restart: always
env_file: .env
volumes:
- ./webmail:/data
- ./overrides/roundcube:/overrides:ro
depends_on:
- front
networks:
- default
networks:
default:
driver: bridge
ipam:
driver: default
config:
- subnet: 192.168.203.0/24.env
# Core Configuration
SECRET_KEY=change_this_to_a_very_long_random_string
SUBNET=192.168.203.0/24
DOMAIN=example.com
HOSTNAME=mail.example.com
POSTMASTER=admin
# TLS Configuration (letsencrypt, cert, mail, notls)
TLS_FLAVOR=letsencrypt
# Admin Interface
ADMIN=true
WEB_ADMIN=/admin
SITENAME=Mailu
# Webmail (roundcube, snappymail, none)
WEBMAIL=roundcube
WEBMAIL_PATH=/webmail
# API
API=true
# Antivirus (Disabled by default to save resources)
ANTIVIRUS=false
# Mail Settings
MESSAGE_SIZE_LIMIT=50000000
PASSWORD_SCHEME=PBKDF2
LOG_LEVEL=INFO
# Advanced
# RECIPIENT_DELIMITER=+
# DMARC_RUA=mailto:admin@example.com
# DMARC_RUF=mailto:admin@example.comCategories:
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