tarting nmap V. 2.54BETA22 ( www.insecure.org/nmap/ )
Interesting ports on  (xxx.xxx.xxx.xxx):
(The 1532 ports scanned but not shown below are in state: closed)
Port       State       Service
21/tcp     open        ftp
22/tcp     open        ssh
25/tcp     open        smtp
53/tcp     open        domain
80/tcp     open        http
110/tcp    open        pop-3
113/tcp    open        auth
443/tcp    open        https
587/tcp    open        submission
3306/tcp   open        mysql


Nmap run completed -- 1 IP address (1 host up) scanned in 11 seconds


위의 auth와 submission을 모르겠네요.... 뭔지...