True, but I think Exchange also has a way to specify to "accept SMTP connections from the following", and I'm thinking you can specify it to only allow smtp connections from the IP Address of your spam filter.
If you are using Exchange, I would post this in that forum. I'm sure someone will have an answer quickly.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.