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deploy/smtp/docker-compose.yml

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+# Postfix — inbound (:25 from internet) + outbound (trusted Docker clients).
+# Included by root docker-compose.yml on the same host as the app.
+#
+# Inbound:  transport map → backend:2525
+# Outbound: backend submits to smtp:25 (mynetworks)
+
+services:
+  smtp:
+    build:
+      context: ../../smtp
+    container_name: agmail-smtp
+    restart: unless-stopped
+    hostname: ${MAIL_HOSTNAME:-mail.getall.help}
+    environment:
+      MAIL_HOSTNAME: ${MAIL_HOSTNAME:-mail.getall.help}
+      MAIL_DOMAIN: ${MAIL_DOMAIN:-getall.help}
+      INBOUND_DOMAINS: ${INBOUND_DOMAINS:-getall.help}
+      RELAY_DOMAINS_FILE: /data/relay_domains/domains.list
+      RELAY_DOMAINS_REFRESH: ${RELAY_DOMAINS_REFRESH:-60}
+      BACKEND_INGEST_HOST: ${BACKEND_INGEST_HOST:-backend}
+      BACKEND_INGEST_PORT: ${BACKEND_INGEST_PORT:-2525}
+    ports:
+      - "${SMTP_INBOUND_PORT:-25}:25"
+    volumes:
+      - smtp_queue:/var/spool/postfix
+      - relay_domains_data:/data/relay_domains
+    depends_on:
+      backend:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "postfix status >/dev/null 2>&1"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
+
+volumes:
+  smtp_queue: