电子邮件解惑之邮件传输协议(smtp)

邮件客户端向邮件服务器发送信件遵守smtp协议

下面是个例子

服务器:   smtp.163.com
发件人:[e-mail] 密码: 111111
收件人:[e-mail]
发件人 [e-mail]的base64结果是 c2VuZGVyQDE2My5jb20=
密码 111111 的base64结果是 MTExMTEx

# telnet smtp.163.com 25
Trying 202.108.5.83...
Connected to smtp.163.split.netease.com.
Escape character is '^]'.

220 163.com Anti-spam GT for Coremail System (163com[071018])

ehlo zhangyan.name
250-mail
250-PIPELINING
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN

250 8BITMIME

auth login
334 dXNlcm5hbWU6
c2VuZGVyQDE2My5jb20=
334 UGFzc3dvcmQ6
MTExMTEx

235 Authentication successful

mail from: <[e-mail]>

250 Mail OK

rcpt to: <[e-mail]>

250 Mail OK

rcpt to: <[e-mail]>

250 Mail OK

rcpt to: <[e-mail]>

250 Mail OK

data

354 End data with <CR><LF>.<CR><LF>

这里是信体
.

250 Mail OK queued as smtp3,DdGowLD7zQliIL5Iu7MjGg==.7754S2 1220419812

quit
221 Bye
Connection closed by foreign host.