Using SuSE 7.0 as sendmial relay

I have a SuSE 7.0 box being used as a mail server and it accepts mail fine and I can send mail find from the box. I also want to relay mail through this machine from my office. My office is behind a pix. I added the following entries to /etc/mail/access 127 RELAY 64.x.x.x OK 64.x.x.x OK 208.46 OK I can relay fine from the 64.x machines, which are on the same subnet as my mail server (DSL with 5 statics) however I cannot relay from the 208 network. Anyone have any ideas? Thanks, CC