Add smtp relay.

docker-compose.yml

@@ -91,11 +91,26 @@ services:
       - com.centurylinklabs.watchtower.monitor-only=true
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
+  mail:
+    image: juanluisbaptiste/postfix
+    restart: unless-stopped
+    networks:
+      - mail
+    environment:
+      - SMTP_SERVER=smtppro.zoho.com
+      - SMTP_USERNAME=axp@reilysiegel.com
+      - SMTP_PASSWORD_FILE=/secret
+      - OVERWRITE_FROM=axp@reilysiegel.com
+    volumes:
+      - /secrets/smtp:/secret
 
 networks:
   proxy:
     external: true
     name: proxy
+  mail:
+    external: true
+    name: mail
 
 volumes:
   homepage: