34 lines
No EOL
1 KiB
YAML
34 lines
No EOL
1 KiB
YAML
services:
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smtp-relay:
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image: loganmarchione/docker-postfixrelay:latest
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container_name: smtp_relay_node${SMTP_NODE_ID}
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restart: always
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ports:
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- "2525:25"
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environment:
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# 1. THE UPSTREAM SMARTHOST (Where mail goes)
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- RELAY_HOST=${SMTP_RELAY_HOST}
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- RELAY_PORT=${SMTP_RELAY_PORT}
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- RELAY_USER=${SMTP_RELAY_USER}
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- RELAY_PASS=${SMTP_RELAY_PASS}
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# 2. INTERNAL SECURITY (Who can send)
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# Allow your entire subnet (e.g., 192.168.1.0/24) to send without auth
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- MYNETWORKS=${SMTP_RELAY_NETWORKS}
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# 3. IDENTIFICATION
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# The hostname this relay announces itself as
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- SYSTEM_TIMEZONE=America/Edmonton
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- MESSAGE_SIZE_LIMIT=10240000
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volumes:
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# QUEUE PERSISTENCE (Critical for HA)
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# If Node 1 dies, Node 2 sees the pending mail queue on Gluster
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- /docker/smtp-relay/queue:/var/spool/postfix
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networks:
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- smtp_external # Attached to Traefik network just in case, or for internal access
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networks:
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smtp_external:
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external: true |