Hi,
I think you may have meant "csunity voicename" instead of "csunity voicemail". If that's the case, then I may have an answer for you.
Although I have not been able to locate documentation explicitly detailing what the "csunity voicename" value is, based on knowledge of how Unity interacts with Active Directory for Exchange deployments, this is almost certainly the recorded voicename for that Unity subscriber.
Although having the voicename stored in the directory as opposed to only on the Unity server is more appropriate to a Digital Networking implementation, the synch occurs between Unity and its directory anyway.
This document covers AD/Exchange (see table 1, "msExchRecordedName" as an analogous entry to what I believe you are seeing in your Domino directory): http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_white_paper09186a00800e4535.shtml#wp1050490
This document covers Digital Networking for Unity partnered with Domino: http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_feature_guide_chapter09186a008022c678.html
If some subscribers have a recorded voicename and others do not, that would explain why the file appears for some subscribers and not others.
To test this theory, you could select a subscriber that does not have a file and record a voicename for that user, synch the database with Unity, then check to see if
a file now exists where none existed before.
I hope this helps.
