[sudo-users] Sudo 1.8.1p2 sudo: unable to dlopen error

[Todd C. Miller]

My guess is that you don't have the LDAP libraries installed on the
other machines.  Try running:

 # ldd /opt/soe/local/sudo-1.8.1/libexec/sudoers.sl

In the "shared library list" you should see something like this:

         shared library list:
             dynamic   /usr/lib/libpam.1
             dynamic   /usr/lib/libldap.sl
             dynamic   /usr/lib/libc.2


If any of the dynamic libraries listed there are missing you will get
the dlopen failure you reported.

 - todd