OK.. I've read the relaying and selective relaying docs, but I'm still confused as to what I need to do. Maybe, I have a case of cranial rectitus. (Having ones head up ones A##) I'm setting an ISP that will service upwards of 50,000 to 5,000,000 clients, most of which will be accessing our servers through an Internet Appliance device. How do I provision relaying for these users. They will be connecting to the Internet through their local POP's, with different IP's. Do I need to include of these IP's in the tcp.smtp file, or is there a better way to handle this? - John
