I have installed POSTINI SPAM filtering service for a number of clients running Exchange. I decided to do the same for my small office. 4 POP mailboxes.
Problem is every ISP I've tried is expecting my domain MX record to point to their server, which is not how POSTINI works. My MX Records points to POSTINI which then sends my EMail to a hostname.
Does anyone know of a way around this or an ISP that will support this environment?