diff --git a/mailcap-server.py b/mailcap-server.py
old mode 100644
new mode 100755
index 365d333..5fdf001
--- a/mailcap-server.py
+++ b/mailcap-server.py
@@ -50,7 +50,7 @@ class Server(object):
                 os.makedirs(dir)
             self._dir = dir
         else:
-            self._dir = tempfile.TemporaryDirectory()
+            self._dir = tempfile.TemporaryDirectory(prefix="mailcapd")
 
     def close(self):
         self._socket.close()
@@ -100,12 +100,15 @@ class Server(object):
         full_name = os.path.join(self._dir.name, fn)
         append = 0
         # While the filename already exists, check if we have a hash match
+        print("Trying path %s" % (full_name,))
         while os.path.exists(full_name):
             hash = hashlib.sha256()
             hash.update(open(full_name, "rb").read())
+            print("File exists, hash is %s" % (" ".join(["%02x" % (x,) for x in hash.digest()])))
             
             # Found a matching file. Do not receive the file.
             if data == hash.digest():
+                print("Hash matches received hash. Closing connection.")
                 conn.send(b'\x00')
                 conn.close()
                 return full_name, mime
@@ -116,7 +119,8 @@ class Server(object):
             if len(name_parts) > 1:
                 full_name = os.path.join(self._dir.name, "%s-%d.%s" % ('.'.join(name_parts[:-1]), append, name_parts[-1]))
             else:
-                full_name = os.path.join(self._dir.name, "%s-%d" % (fn, append, name_parts[-1]))
+                full_name = os.path.join(self._dir.name, "%s-%d" % (fn, append))
+        print("Accepted filename %s" % (full_name,))
         conn.send(b'\x01')
 
         # Receive the file length