pop3 有问题
OpenSUSE-V11-1-32bit-single:~ # lsof -i:110
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
xinetd 13309 root 5u IPv4 36087 0t0 TCP *:pop3 (LISTEN)
OpenSUSE-V11-1-32bit-single:~ # telnet 10.254.197.50 110
Trying 10.254.197.50...
Connected to 10.254.197.50.
Escape character is '^]'.
Connection closed by foreign host.