sudo problem/question

[Kipton Moravec]

When I try to use sudo on one of my 8.04 Ubuntu computers I get the
message 

sudo: unable to resolve host violet

It then asks for the password.

The prompt is kip at violet:

So part of the machine knows it is violet.
violet is the name of the machine in the System -> Network -> General
(Tab) -> Host Name: field.

How do I fix it so the warning does not appear?

I tried adding an alias in the hosts as it had 

127.0.0.1 localhost violet.Workgroup

so I changed it to 

127.0.0.1 localhost violet.Workgroup violet

but that did not fix it.

Kip

  
-- 
Kipton Moravec AE5IB .- . ..... .. -...

"Always do right; this will gratify some people and astonish the rest."
--Mark Twain