Study Notes

POP3(Post Office Protocol 3),the 3rd version of post office protocol.It specifies the protocol which contain connection between mail server and person computer,and then downloading the mail from servers.POP3 is the first offline protocol of mail receiving.POP3 server is the mail server following the POP3 protocol.

POP3 commands:

USER username
PASS password
APOP name,digest
STAT status of mail
UIDL n
LIST n list all mails and indicate number and size
RETR n retrieve the content of mail
DELE n delete the mail
RSET comment all delete issues
TOP n,m return the first m lines of the No. n mail
NOOP
QUIT exit
I used telnet to test POP3 commands,for example,issue the following comands in the ternimal:(Note,the port of POP3 is 110)

# telnet mail.tom.com 110
Trying 219.133.55.213...
Connected to mail.powerleader.com.cn (219.133.55.213).
Escape character is '^]'.
+OK POP3 ready

And then,input username and password to list and read all mails.

Identify the language supported by the operating system:

# locale -a 

This command will list all languages supported.

Checking the new hardware:

# /etc/init.d/kudzu {start | stop}