Having the fax gateway service (Lightning Fax or otherwise) installed on the Unity server is not supported. The last version having LF installed on box was supported was 2.4.6. You'll need to get that fax server installed off box.
Problems with the LF gateway are tricky, you wont find folks out here that know much about the ins and outs of what that guy is trying to do at startup. You'll have better luck contacting Interstar directly.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...