feat: add SMTP proxy server

.github/workflows/smtp_proxy_server.yml

@@ -0,0 +1,40 @@
+name: SMTP Proxy Server Docker Image CI
+
+on:
+  push:
+    paths:
+      - "smtp_proxy_server/**"
+    tags:
+      - "*"
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: smtp_proxy_server
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push Docker images
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ github.repository }}/${{ env.IMAGE_NAME }}:${{ github.ref_name }}
+            ${{ env.REGISTRY }}/${{ github.repository }}/${{ env.IMAGE_NAME }}:latest

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - `ENABLE_USER_CREATE_EMAIL` 是否允许用户创建邮件
 - 允许 admin 创建无前缀的邮件
+- 添加 `SMTP proxy server`，支持 SMTP 发送邮件
 
 ## v0.3.0
 

README.md

@@ -32,12 +32,14 @@
 - [x] 使用 Cloudflare Pages 部署前端
 - [x] 使用 Cloudflare Workers 部署后端
 - [x] email 转发使用 Cloudflare Email Routing
-- [x] 使用 password 重新登录之前的邮箱
+- [x] 使用 `password` 重新登录之前的邮箱
 - [x] 获取自定义名字的邮箱
 - [x] 支持多语言
 - [x] 增加访问密码，可作为私人站点
 - [x] 增加自动回复功能
-- [x] 增加查看附件功能
-- [x] 使用 rust wasm 解析邮件
+- [x] 增加查看 `附件` 功能
+- [x] 使用 `rust wasm` 解析邮件
 - [x] 支持发送邮件
-- [x] 支持 DKIM
+- [x] 支持 `DKIM`
+- [x] `admin` 后台创建无前缀邮箱
+- [x] 添加 `SMTP proxy server`，支持 SMTP 发送邮件

smtp_proxy_server/.env.example

@@ -0,0 +1,2 @@
+proxy_url=https://temp-email-api.xxx.xxx
+port=8025

smtp_proxy_server/.gitignore

@@ -0,0 +1,161 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+test*

smtp_proxy_server/docker-compose.yaml

@@ -0,0 +1,12 @@
+services:
+  smtp_proxy_server:
+    image: ghcr.io/dreamhunter2333/cloudflare_temp_email/smtp_proxy_server:latest
+    # build:
+    #   context: .
+    #   dockerfile: dockerfile
+    container_name: "smtp_proxy_server"
+    ports:
+      - "8025:8025"
+    environment:
+      - proxy_url=https://temp-email-api.xxx.xxx
+      - port=8025

smtp_proxy_server/dockerfile

@@ -0,0 +1,7 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+COPY requirements.txt /requirements.txt
+RUN python3 -m pip install -r /requirements.txt
+COPY . /app
+ENTRYPOINT [ "python3", "server.py" ]

smtp_proxy_server/requirements.txt

@@ -0,0 +1,3 @@
+aiosmtpd==1.4.5
+pydantic-settings==2.2.1
+requests==2.31.0