I gave up on my existing installation and created a whole new one. One question I have is will I have a problem doing yum update on the individual CentOS 5.4 installations with just the command "yum update", or do I need to exclude the rpmforge repository or any special way of updating the os? On the mail servers since postfix was installed by compiling, do I need to exclude postfix from yum update, and if so how do I go about updating postfix? Cent OS 5.4 x64 Thanks, Casey
If you compiled any package by hand you should have removed the RPM first. And again, everything that you compile by hand means that you assumed the responsibility of updating it by hand. That's why I always avoid compiling anything by hand because if it breaks I'm the only one to fix it. If you are using a distribution with a large community there is 1000's of people that share the responsibility of upgrading a package.
You may want to read this thread: http://www.howtoforge.com/forums/showthread.php?t=45096 It tells you how to prevent yum from updating postfix.