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mailserver/compose.yaml

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+services:
+  mailserver:
+    image: ghcr.io/docker-mailserver/docker-mailserver:latest
+    container_name: mailserver
+    hostname: mail.ferngarden.net
+    env_file: mailserver.env
+    environment:
+      SSL_TYPE: manual
+      SSL_CERT_PATH: /srv/tls/caddy/certificates/acme-v02.api.letsencrypt.org-directory/wildcard_.ferngarden.net/wildcard_.ferngarden.net.crt
+      SSL_KEY_PATH: /srv/tls/caddy/certificates/acme-v02.api.letsencrypt.org-directory/wildcard_.ferngarden.net/wildcard_.ferngarden.net.key
+    ports:
+      - "25:25"    # SMTP  (explicit TLS => STARTTLS, Authentication is DISABLED => use port 465/587 instead)
+      - "143:143"  # IMAP4 (explicit TLS => STARTTLS)
+      - "465:465"  # ESMTP (implicit TLS)
+      - "587:587"  # ESMTP (explicit TLS => STARTTLS)
+      - "993:993"  # IMAP4 (implicit TLS)
+    volumes:
+      - mailserver_data:/var/mail/
+      - mailserver_state:/var/mail-state/
+      - mailserver_logs:/var/log/mail/
+      - mailserver_config:/tmp/docker-mailserver/
+      - /etc/localtime:/etc/localtime:ro
+      - caddy_data:/srv/tls
+    restart: always
+    stop_grace_period: 1m
+    healthcheck:
+      test: "ss --listening --ipv4 --tcp | grep --silent ':smtp' || exit 1"
+      timeout: 3s
+      retries: 0
+
+volumes:
+  mailserver_data:
+    name: mailserver_data
+  mailserver_state:
+    name: mailserver_state
+  mailserver_logs:
+    name: mailserver_logs
+  mailserver_config:
+    name: mailserver_config
+  caddy_data:
+    external: true