C语言实现的一个简易的SMPT服务器代码，可做嵌入式开发参考。

stm32平台的SMPT客户端程序，可实现单片机发送邮件功能-This program is an SMTP Client example. It shows you how to send a dynamic email to an email address. This example will configure the LAN network parameters for the evaluation board automatically if a DHCP Serve