Authenticationserver Option
From MsgServerDocWiki
This specifies the hostname and port for a third-party authentication service to use with the MMP. The recommended value is 127.0.0.1:56 when a third-party authentication service is available on the same machine as the MMP. For developer instructions and SDK see the directory msg_svr_base/examples/tpauth.
When not set, the MMP will authenticate via LDAP.
The default value is: 0

