Ubuntu:
首先安裝mail
sudo apt-get install mailx 再次安裝postfix sudo apt-get install postfix (安裝過程中要進行配置，按照提示即可完成) 傳送郵件命令示例 cat "content"| mail -s "subject" [email protected]

在 系統

1. apt-get install mutt
2. apt-get install swaks
3. apt-get install mailx
4. apt-get install sharutils

1. yum install mutt
2. yum install swaks
3. yum install mailx
4. yum install sharutils

echo "This is the body"| mutt -s "Subject" [email protected]

sendmail的配置巨集檔案：/etc/mail/sendmail.mc

vi  /etc/mail/sendmail.mc

sharutils:(uuencode) 2 send attachments

1. 如何檢視linux的mailqueue
$mailq
$sendmail -bp
$ll /var/spool/mqueue  這是mail佇列存放的目錄，可以將裡面的檔案刪除來清空mailqueue
可以通過這些命令來檢視郵件是否送出

2. 如何傳送mail
1)將檔案當做電子郵件的內容送出
語法：mail -s “主題”使用者名稱@地址< 檔案
例如：
$mail -s "send with content that is a file" [email protected] < install.log
2)傳送mail給本系統使用者
$mail 使用者名稱
3)編輯郵件內容
$mail [email protected]
Subject: messge for job  編輯標題後回車
Apple this job. 開始編輯內容，結束後按Ctrl+D退出內容編輯
Cc:     輸入cc地址，如果沒有可以直接回車將郵件傳送出去
注：Ctrl+C可以中斷郵件編輯
4)快速傳送郵件
$echo “郵件正文” | mail -s 郵件主題 

[email protected]
5)傳送附件
$uuencode 附件名 顯示附件名 | mail -s "subject" [email protected]
注：uuencode是將二進位制檔案轉換為文字檔案的過程，轉換後的檔案可以通過純文字e-mail進行傳輸，在接收方對該檔案進行uudecode，即將其轉換為初始的二進位制檔案。

6）傳送郵件時增加-v選項可以在終端看到郵件伺服器的response

[[email protected] ~]# mail -v -s "send with content that is a file" [email protected] < install.log
[email protected]... Connecting to [127.0.0.1] via relay...
220 localhost.localdomain ESMTP Sendmail 8.13.1/8.13.1; Mon, 13 Dec 2010 14:40:13 +0800
>>> EHLO localhost.localdomain
250-localhost.localdomain Hello tc-40432-5s [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH GSSAPI DIGEST-MD5 CRAM-MD5
250-DELIVERBY
250 HELP
>>> MAIL From:<[email protected]> SIZE=60054 [email protected]
250 2.1.0 <[email protected]>... Sender ok
>>> RCPT To:<[email protected]>
>>> DATA
250 2.1.5 <[email protected]>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
250 2.0.0 oBD6eDwW006082 Message accepted for delivery
[email protected]... Sent (oBD6eDwW006082 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 localhost.localdomain closing connection

3. 系統收到的mail會儲存在/var/spool/mail/使用者名稱 資料夾中
收mail,鍵入mail就會顯示當前使用者的前20封mail。可對郵件進行檢視刪除等操作。鍵入？可顯示所有命令
$mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 37 messages 37 new
>N  1 [email protected]  Mon Dec 13 11:55  21/940   "Cron <[email protected]>       /usr/sbin/logrotate /usr/local/gemini/hss/3.0.0-ga1/etc/logrotate-stats/hss-stats-rotate"
.
.
.
& ?
    Mail   Commands
t <message list>                type messages
n                               goto and type next message
e <message list>                edit messages
f <message list>                give head lines of messages
d <message list>                delete messages
s <message list> file           append messages to file
u <message list>                undelete messages
R <message list>                reply to message senders
r <message list>                reply to message senders and all recipients
pre <message list>              make messages go back to /usr/spool/mail
m <user list>                   mail to specific users
q                               quit, saving unresolved messages in mbox
x