[root@wlxxb ~]# telnet 192.168.192.12 25
Trying 192.168.192.12...
[root@wlxxb ~]# telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 wlxxb.wb.com ESMTP Postfix
ehlo 127.0.0.1
250-wlxxb.wb.com
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250 8BITMIME
mail from:<tsg@wb.com>
250 Ok
rcpt to:<lsj@wb.com>
250 Ok
data
354 End data with <CR><LF>.<CR><LF>
hello hello hello
.
250 Ok: queued as B289E103082
421 wlxxb.wb.com Error: timeout exceeded
Connection closed by foreign host.
[root@wlxxb ~]# telnet 127.0.0.1 110
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
+OK Hello there.
user
lsj@wb.com
+OK Password required.
pass 123456
+OK logged in.
list
+OK POP3 clients that break here, they violate STD53.
.
why ????
