Re: [Exim] limiting relay based on sender address

On Fri, 2004-07-16 at 12:09 +0900, Nathan Ollerenshaw wrote:
> In addition to all the normal checks that are done to accept a mail for
> relay, I am thinking about denying relay to messages with a sender
> domain that is not a local domain. So, if a customer decides to spam
> and use our servers to do it, they have to use an address on our
> system, providing a way for me to track abuse.
>
> Is this a good idea? Are there any potential problems doing it this way?

well, we have quite a few users using Hotmail addresses rather than the
address we give them. I'd check the logs (or make an ACL which only
logs, not denies, then check the logs) before implementing such a rule.
I'm sure it's acceptable for many, though.
--
Kjetil T.