Limiting SBS to only allow connections from a few IPs
I have a hosted spam/virus service and i want to lock down my SBS 2003 machine to only accept email from the servers at this service (I still get spam sent directly to my server). I set it up the Default SMTP virtual server to only accept connections from these particular IPs (under Connection Control) but I continue to get spam sent directly to the server. Where do I configure this? I looked at the SmallBusiness SMTP Connector but didn't see anything there.