Nmap scan report for ip-78-102-52-21.bb.vodafone.cz (78.102.52.21)
Host is up (0.087s latency).
Not shown: 95 closed tcp ports (reset)
PORT    STATE SERVICE
21/tcp  open  ftp
23/tcp  open  telnet
25/tcp  open  smtp
80/tcp  open  http
587/tcp open  submission

Nmap done: 1 IP address (1 host up) scanned in 3.72 seconds