If you are talking about POP3 mail forwarding that didn't help me.

I have a gmail account here and I had the mail from there forwarded to my outlook address. The spam still came.

I have the same set up again, another gmail account which I have set to forward my emails to my outlook express via POP3 mail forwarding.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi