Send an email from Solaris using Linux email server

Hello everyone
I have a problem and I need your help:
I have a Solaris 10 and Solaris 8 UNIX Servers, and Linux Centos4 as email server.
I need send an email from Solaris servers preferably using Centos4 email server.
I have no mail service configured in my Solaris computers

Check the /etc/resolv.conf file and modify it as per your lan segment.
Configure mail client on Solaris machine using user name from CentOS and SMTP and POP address too as CentOS. I mean, you will have to use the same user created on CentOS.

Thanks,
Deepak