使用TELNET手工操作 SMTP/POP 收发邮件

使用TELNET手工操作 SMTP/POP 收发邮件

说明：手工录入的用蓝色字体表示，#后的为注释，不可录入。

=========先计算BASE64编码的用户名密码，认证登录需要用到===========

[crazywill@localhost crazywill]$ perl -MMIME::Base64 -e 'print encode_base64("crazywill");'

Y3Jhenl3aWxs

[crazywill@localhost crazywill]$ perl -MMIME::Base64 -e 'print encode_base64("mypassword");'

bXlwYXNzd29yZA==

======================开始SMTP发信操作==========================

[crazywill@localhost crazywill]$ telnet smtp.163.com 25
              #telnet登录25端口

Trying 202.108.5.81...

Connected to smtp.163.com.

Escape character is '^]'.

220 163.com Coremail SMTP(Anti Spam) System
EHLO smtp.163.com  
                                                         # 握手 :)

250-mail

250-PIPELINING

250-AUTH LOGIN PLAIN

250-AUTH=LOGIN PLAIN

250 8BITMIME
AUTH LOGIN
                                                                    # 开始认证登录

334 dXNlcm5hbWU6
crazywill

334 UGFzc3dvcmQ6
mypassword

535 Error: authentication failed                                       # 直接用户名密码不能登录
AUTH LOGIN

334 dXNlcm5hbWU6
Y3Jhenl3aWxs

334 UGFzc3dvcmQ6
bXlwYXNzd29yZA==

235 Authentication successful                                      # 使用Base64编码则成功登录
MAIL FROM:<
test@163.com

>
                                     # 邮件发送方

553 You are not authorized to send mail, authentication is required          # 不可伪造发送邮件 
MAIL FROM:<
crazywill@163.com

>
                            # 邮件发送方

250 Mail OK
RCPT TO:<
crazywill@163.com

>
                                   # 邮件的接收方，若有多个收件人，则重复这一语句多次。

250 Mail OK
DATA
                                                                               # 邮件体内容

354 Please start mail input.
TO:
crazywill@163.com

                                # 此处的TO，FROM，等内容，可以随便造假 :)  可以骗人但骗不了懂得查看邮件源码的。
FROM:
cccc@163.com

SUBJECT: test by telnet/smtp

test, just a test.                                             # 邮件正文内容，与Header部分空一行开始写

.
                                                                       # 邮件写完，以一个句点加回车结果。

250 Mail OK queued as smtp10,wKjADQ2ApxRnnqBE0CWaEw==.38326S3                 # 返回250 表示发送成功。
NOOP                                                            # 空语句，不执行任何操作，一般用来保持和服务器连接，不要掉线

250 OK
QUIT                                                            # 退出

221 Closing connection. Good bye.

Connection closed by foreign host.

[crazywill@localhost crazywill]$

======================开始POP3收信操作==========================

[crazywill@localhost crazywill]$ telnet pop.163.com 110
                #telnet登录110端口

Trying 202.108.5.104...

Connected to pop.163.com.

Escape character is '^]'.

+OK Welcome to coremail Mail Pop3 Server (163com[20050206])
USER crazywill  
                                                   # 用户名

+OK core mail
PASS mypassword   
                                          # 登录密码

+OK 254 message(s) [27676669 byte(s)]
STAT
                                                                      # 查看邮箱状态

+OK 254 27676669
LIST
                                                                         # 邮件列表

+OK 254 27676669

1 2468

2 21945

3 33136

4 2071

5 3364

6 18906

7 3136

8 24764

.................

TOP 254  0
                                                    # 查看指定邮件的邮件头，0表示查看整个邮件头，其它正整数表示限制返回多少行。

+OK core mail

Received: from smtp.63.com (unknown [58.252.70.158])

        by smtp5 (Coremail) with SMTP id wKjREDrA9gIfFqlEjCnRAg==.29062S4;

        Mon, 03 Jul 2006 21:07:18 +0800 (CST)

TO: crazywill
@163.com

FROM : cccc@163.com
                                                   # 这里即前面发信时伪造的一个假发送人信息，平时正常操作只显示这个。

SUBJECT: test by telnet/smtp                                        # 邮件主题

Message-Id: <44A91687.0E6F6C.07562>

Date: Mon, 3 Jul 2006 21:07:19 +0800 (CST)

Sender: crazywill@163.com
                                            # 这里是真正的发送人，不可伪造。

.
RETR 254
                                                     # 获取指定邮件

+OK 354 octets

Received: from smtp.63.com (unknown [58.252.70.158])

        by smtp5 (Coremail) with SMTP id wKjREDrA9gIfFqlEjCnRAg==.29062S4;

        Mon, 03 Jul 2006 21:07:18 +0800 (CST)

TO: crazywill
@163.com

FROM : cccc@163.com

SUBJECT: test by telnet/smtp

Message-Id: <44A91687.0E6F6C.07562>

Date: Mon, 3 Jul 2006 21:07:19 +0800 (CST)

Sender: crazywill@163.com

test, just a test.

.

DELE 254
                                                       # 删除第254封邮件

+OK core mail
STAT
                                                             # 查看邮箱状态

+OK 253 27676315
QUIT
                                                              # 退出

+OK core mail

Connection closed by foreign host.

[crazywill@localhost crazywill]$

===============================================================

QUESTION:

如何发送给多人，如何CC，BCC？

ANSWER: (此答案由SnifferPro监听OUTLOOK发送多人邮件分析出来的)

同一封信发送/抄送给多人，在MAIL FROM:<...> 后，多次使用 RCPT TO:<...>

每次一个邮件地址，需要发给多少人就 RCPT TO 多少次。

在DATA里面写的CC，BCC，TO，等信息只起显示作用，与实际发送人接收人无关。

CC与BCC的差别：同样都是RCPT TO指定收件人，但是邮件客户端程序，不会将BCC的收件人写到DATA要传送的数据里。

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