SBS 2011 / Email Anti Spam

I'm using a third party anti spam filter before email gets delivered to my SBS 2011 server.

However some legit email, from a domain that is whitelisted on my 3rd party service, is being rejected by my SBS 2011.

Is it possible to disable all anti spam filtering on SBS 2011?

If so where is this configured.

Thanks.

pajoryan123