smtp - 自定义 SMTP 服务器

Question

我想编写一个服务，该服务可用于通过特定主机名和端口发送电子邮件，并具有用于处理用户登录的身份验证服务（用户名、密码）。它可以像这样使用：

import smtplib, SSL

smtp_server = "my-smtp" # How to have this server?
port = 587
sender_email = "user-sender-email@gmail.com" # for example
password = input("Type your password: ")

# Create a secure SSL context
context = ssl.create_default_context()

# Try to log in to server and send email
try:
    server = smtplib.SMTP(smtp_server, port)
    server.ehlo()
    server.starttls(context=context)
    server.ehlo()
    server.login(sender_email, password)
    # And user can send email here

我怎样才能做到这一点？