Couldn't resolve your hostname; using your IP address

[Efrain]

NOTICE AUTH *** Looking up your hostname...
NOTICE AUTH *** Couldn't resolve your hostname; using your IP address instead <----- this is when i connect to my own server

luna_moon: [14:47] * Connecting to irc.myservername.info (6667) <----- this is when a friend connects to my server
[3:49pm] Efrain: [3:47pm] luna_moon: -
[3:49pm] Efrain: [3:47pm] luna_moon: [14:47] -irc.myservername.info- *** Looking up your hostname...
[3:49pm] Efrain: [3:47pm] luna_moon: -
[3:49pm] Efrain: [3:47pm] luna_moon: [14:47] -irc.myservername.info- *** Couldn't resolve your hostname; using your IP address

Looking up your hostname...
Couldn't resolve your hostname; using your IP address instead <--- how do i fix this hostname issue?

[Casper]

It's probably due to a DNS failure. Maybe you should look for another one, like for example OpenDNS

[Stealth]

This was solved in the support channel.

The DNS servers were dead, so we swapped them with 4.2.2.6 and 4.2.2.5