setting up a filter in outlook

[cin]

Hi,

I am getting lots of spam. I notice that most of my
valid contacts have a display address that includes a
comma (,) separating the first and last names. Most spam
that I get does not have a comma between the display name
of the sender.

Is it possible to setup a rule to check for the existance
of a comma on the display name of the sender and if the
comma does not exist, move the message to the delete box?

Thanks