Результат выполнения команды PING для mailrelay.ru.:

PING mailrelay.ru (89.108.104.183) 56(84) bytes of data.
64 bytes from corpmx.net (89.108.104.183): icmp_seq=1 ttl=120 time=1.93 ms
64 bytes from corpmx.net (89.108.104.183): icmp_seq=2 ttl=120 time=1.70 ms
64 bytes from corpmx.net (89.108.104.183): icmp_seq=3 ttl=120 time=1.33 ms
64 bytes from corpmx.net (89.108.104.183): icmp_seq=4 ttl=120 time=1.49 ms
64 bytes from corpmx.net (89.108.104.183): icmp_seq=5 ttl=120 time=1.53 ms

--- mailrelay.ru ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4003ms
rtt min/avg/max/mdev = 1.338/1.600/1.933/0.208 ms