On Fri, Dec 10, 2010 at 8:43 AM, Steve Clark <sclark at netwolves.com> wrote: > > I have a confusing problem. I have two centos 5,5 boxes. Both have > sudo.i386 1.7.2p1-9.el5_5 > installed > > I am using the same sudoers file, but the one on box A keeps trying to do > DNS lookups while the one on box B does not. How do I disable this DNS > lookup? Do both hosts have their hostnames in "/etc/hosts"? Do both hosts have "hosts: files dns" in "/etc/nsswitch.conf"?