Docker cookiecutter中的Django-无法发送电子邮件

Question

我有以下docker文件

version: '3'

volumes:
  production_postgres_data: {}
  production_postgres_data_backups: {}
  production_caddy: {}
  ghotel_cc_production_static_vol: {}

services:
  django: &django
    restart: always
    build:
      context: .
      dockerfile: ./compose/production/django/Dockerfile
    image: ghotel_cc_api_production_django
    volumes:
      - production_static_vol:/app/static
    depends_on:
      - postgres
    env_file:
      - ./.envs/.production/.django
      - ./.envs/.production/.postgres
    command: /start

  postgres:
    restart: always
    build:
      context: .
      dockerfile: ./compose/production/postgres/Dockerfile
    image: api_production_postgres
    volumes:
      - production_postgres_data:/var/lib/postgresql/data
      - production_postgres_data_backups:/backups
    env_file:
      - ./.envs/.production/.postgres

  caddy:
    restart: always
    build:
      context: .
      dockerfile: ./compose/production/caddy/Dockerfile
    image: api_production_caddy
    depends_on:
      - django
    volumes:
      - production_caddy:/root/.caddy
      - ghotel_cc_production_static_vol:/app/static
    env_file:
      - ./.envs/.production/.caddy
    ports:
      - "0.0.0.0:8550:80"

问题是无法发送电子邮件。没有错误，Django部分运行良好-我在控制台中看到正确的输出。但是在Django发送电子邮件之后，它就丢失了-永远不会到达收件人。

如何正确配置docker，以便可以发送电子邮件？