Telnet發郵件過程

這是一個用telnet串連上郵件伺服器發郵件的過程. 藍色部分都是我輸入的命令或者參數.

 

AUTH LOGIN後的使用者名稱及密碼是base 64編碼的， 即把使用者名稱和密碼都用base 64編碼，就可以了。

RCPT TO:要指定一個接收者，該郵箱必須存在。

後面的郵件的To:就可以是任何郵件地址了。To:和RCPT TO:不一樣會讓接收者很納悶。郵件結束的時候是一個斷行符號加一個點加一個斷行符號, 即<CRLF>.<CRLF>

注意，這種郵件的格式是Plain text. 沒有很複雜的東西。

 

[lijie@hostname ~]$ telnet 10.129.10.17 25
Trying 10.129.10.17...
Connected to exchangeserver (10.129.10.17).
Escape character is '^]'.
220 exchangeserver Microsoft ESMTP MAIL Service, Version: 6.0.3790.1830 ready at  Mon, 31 May 2010 16:16:11 +0800
EHLO myhost
250-exchangeserver Hello [10.129.15.92]
250-TURN
250-SIZE
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-X-EXPS GSSAPI NTLM LOGIN
250-X-EXPS=LOGIN
250-AUTH GSSAPI NTLM LOGIN
250-AUTH=LOGIN
250-X-LINK2STATE
250-XEXCH50
250 OK
AUTH LOGIN
334 VXNlcm5hbWU6
bIGlqrEaWU=
334 UGFzc3dvcmQ6
Yu76ijUeSYmMndzeA==
235 2.7.0 Authentication successful.
MAIL FROM: test@test.net
250 2.1.0 test@test.net....Sender OK
RCPT TO: xxx@xxx.com
250 2.1.5 xxx@xxx.com
data
354 Start mail input; end with <CRLF>.<CRLF>
From: test1@domain.com
To: test2@domain.com
Date: Mon, 25 Oct 2004 14:24:27 +0800
Subject: test mail
Hi, test2
This is a test mail, you don't reply it.

 

.
250 2.6.0 <PEXHM3SOlbp000001b6@exchangeserver> Queued mail for delivery
quit
221 2.0.0 exchangeserver Service closing transmission channel
Connection closed by foreign host.