Question : sendmail configuration for ubuuntu

I am trying to setup sendmail to relay e-mail to a third party. Is there a basic setup for this. I have setup what I think is correct but get a message:
Relaying denied. IP name lookup failed <194.0.174.190>
What does this mean ???

Answer : sendmail configuration for ubuuntu

hi
yes it is supported in ubuntu
check this out to vanish the clouds of doubt : http://www.schabell.com/2007/01/how-to-setup-exim4-on-ubuntu-linux.html

AND FOLLOW this to CONFIGURE EXIM :
https://help.ubuntu.com/community/Exim4

NOW can you please accept this solution at this stage so other user can see this solution please and then after accepting the solution rely bk if u have any further issue
thnx appreciate