0kb .nsf file at restore target, using SyncSort to restore lotus notes mailbox but it fails with the error below

How was the backup made, I mean: was the backup file made using a Domino-aware back-up application, or was the server down while the backup was made? Backing up open databases is hazardous, because Domino relays writes.

Likewise, restoring a database into a live Domino server data tree had better be avoided, especially when there is still a database with the same name.

PS May I suggest you ask for additional Zones to be added to this question, like the one related to the backup/restore software that you use.

Teh backup was done as a normal base (full) of the replicated DB.  I'm new to the company but it looks like I have the option to recover and individual mailbox and that's what I'm trying to do.  I change the destination to a new target server and then had planned on moving the file (mailbox) to where ever I want to open it from and connecting to it with a client.  The file is written etc, but always shows 0kb in size.

Apparently, Syncsort supports Domino (http://www.syncsort.com/PDF/bexds_lotus.pdf

Some (maybe silly) questions:
- do you have write permission
- is there still disk space left
- do you have a support contract with Syncsort
- which Domino release and which Syncsort release are we talking about here
- what exactly is your final goal, what do you want to achieve with this restore?