Nmap scan report for mail.procyberbez.ru (46.191.142.94)
Host is up (0.061s latency).
Not shown: 94 closed tcp ports (reset)
PORT      STATE    SERVICE
25/tcp    open     smtp
80/tcp    open     http
443/tcp   open     https
646/tcp   filtered ldp
8443/tcp  filtered https-alt
10000/tcp filtered snet-sensor-mgmt

Nmap done: 1 IP address (1 host up) scanned in 3.12 seconds