...
If you have other Opmantek software installed (NMIS, opMaps, etc) you can also edit the module_configs -> module_host variable in opCommon.nmis. Replace http://localhost with the address of the server.
If you do not have NMIS installed on the same server, set the variable omkd_require_nmis => "false" (it's in the omkd section of the config).
The email section is described in the Open-AudIT Enterprise - Configuration Guide document.
...