<div class="codebody" id="code94060"> $ telnet 邮箱SMTP服务地址 25 Trying 邮箱服务IP地址... Connected to 邮箱SMTP服务地址. Escape character is '^]'. exchange邮箱服务器地址 Microsoft ESMTP MAIL Service ready at Sat,2 Jun 2012 15:02:12 +0800 EHLO 127.0.0.1 -exchange邮箱服务器地址 Hello [邮箱服务IP地址] -SIZE -PIPELINING -DSN -ENHANCEDSTATUSCODES -X-ANONYMOUSTLS -AUTH NTLM LOGIN -X-EXPS GSSAPI NTLM -8BITMIME -BINARYMIME -CHUNKING -XEXCH50 XRDST AUTH LOGIN VXNlcm5hbWU6 用户名(base64_encode) UGFzc3dvcmQ6 密码(base64_encode) 2.7.0 Authentication successful MAIL FROM:发件箱地址 2.1.0 Sender OK RCPT TO:收件箱地址 2.1.5 Recipient OK DATA Start mail input; end with . 要发送的内容(这里的相关的规范有很多) . 2.6.0 <0b476f30-3b96-4e3d-84d2-395a96d34000@exchange邮箱服务器地址> Queued mail for delivery QUIT 2.0.0 Service closing transmission channel Connection closed by foreign host.