Interesting ports on mentor.isinj.com (205.147.157.30):
(The 1526 ports scanned but not shown below are in state: closed)
Port       State       Service
7/tcp      open        echo                    
9/tcp      open        discard                 
13/tcp     open        daytime                 
17/tcp     open        qotd                    
19/tcp     open        chargen                 
25/tcp     open        smtp                    
42/tcp     open        nameserver              
80/tcp     open        http                    
106/tcp    open        pop3pw                  
110/tcp    open        pop-3                   
135/tcp    open        loc-srv                 
143/tcp    open        imap2                   
389/tcp    open        ldap                    
1031/tcp   open        iad2                    
1433/tcp   open        ms-sql-s                
1723/tcp   open        pptp                    

Remote operating system guess: Windows NT4 / Win95 / Win98

# Nmap run completed at Mon Jun  4 00:08:09 2001 -- 1 IP address (1 host up) scanned in 8 seconds