DNS Server

darksun sm-mta: unable to qualify my own domain name (darksun) -- using short name" ....this message is appearing all the time in all machines, when i'm writting anything on vi, when i'm browse something on links, when i'm using BitchX under irc, it appears all the time, and it's very bad for working, so to make not appear that messages i have to install my own DNS Server isnt it ?!, but it have to be installed under the gateway to all other machines dont give any type of this error isnt it ?! or if i install DNS Server under other machine in the network it resolves the problem of the messages in all machines?!

PS: my network is: the gateway where the first nic (rl0) is connected to the CABLE MODEM and the second nic (rl1) is connected to the first door of the switch, and the switch have 7 more doors that are all busy with RJ-45 Cable connected to other 7 machines! Received on Tue Dec 31 11:52:57 2002