If you come across the following error when trying to add domains:

Standard Error: ['/usr/bin/newaliases: error while loading shared libraries:
libkeyutils.so.1: cannot open shared object file: No such file or directory\n']

You will need to fix this issue simply make a hardlink for libkeyutils.so.1 in /home/virtual/FILESYSTEMTEMPLATE/siteinfo/usr/lib and point it to /lib/libkeyutils-1.2.so. It needs to be a hard link and you point it to libkeyutils-1.2.so and not /lib/libkeyutils.so.1 because libkeyutils.so.1 is a symlink to libkeyutils-1.2.so.

The command to complete the above fix is as follows:

ln /lib/libkeyutils-1.2.so libkeyutils.so.1