Whats the easiest
way to secure my mail server (imail 6.06) from being an open relay. We are
an ISP and putting in all the ip's (even subnets) could be tough, but I'm
considering it. What about the "relay mail for local hosts" or "local
users" option? Will this require any changes to the end
users?
There are maybe a
thousand users already using.
Thanks
