Does the Automic FTP send any extra files behind the scenes during a transfer?

Discussion created by Rob_Fetterhoff_1512 on Mar 31, 2015
Latest reply on Oct 16, 2015 by Jennifer_Jinhong_34
I'm setting up an FTP to a company that will send back a "reject file" if the file is on bad on their side for whatever reason.  The file I'm sending shows up on their dashboard and goes through all their check points just fine.  I then however get a file sent back to me stating the following:

 Error processing file: .tmp-uc4-control-timestampfile-936106732 
     (E) Unknown File Type  

Does anyone know anything about that file I have in bold?  It is definitely not in the zip file that is being sent over.  I was thinking maybe it's something that's more behind the scenes that I wouldn't normally see.

**EDIT** It looks like this file happens when we connect to this company to just pull a file as well.  Maybe there is something that gets pushed when any transfer occurs?