[Mimedefang] Is this an error?

[Marcelo Araujo]

I have installed Razor and now I'm receiving the following error on my 
/var/log/mail:

Jan 16 16:21:56 mail mimedefang-multiplexor: Slave 0 stderr: Use of 
uninitialized value in split at /usr/local/lib/perl5/5.8.0/File/Spec/Unix.pm 
line 216.

2nd question: How can I test if Razor is working?

TKS,
Marcelo Araujo.