--- cvsnt-2.5.03.2382/protocols/ntlm/smbutil.c.orig	2006-10-21 03:30:43.000000000 +0200
+++ cvsnt-2.5.03.2382/protocols/ntlm/smbutil.c	2006-10-21 03:50:05.000000000 +0200
@@ -258,6 +258,12 @@ buildSmbNtlmAuthRequest_userlen (tSmbNtl
   /* FIXME this should be workstation, not username */
   AddBytes (request, user, user, user_len);
   AddString (request, domain, domain);
+  /* offset must not point past end of message (otherwise server responds
+   * with "The parameter is incorrect."), however if the string length
+   * is zero it doesn't matter where exactly the offset points to, I think
+   */
+  if (!domain || !*domain)
+    request->domain.offset--;
 }
 
 void