Hello,
I run a web forum and every day or two it gets spammed by people who are
completing the registration. Part of the registration process is getting an
email that has a link in it they need to click to confirm the address is real.
Every single spammer is using mail.ru as their mail domain. Now, chances of
me ever getting a legitimate member from Russia are non-existent.
I cannot tell the webforum "Hey, stupid, don't email to that domain, it's
bogus!" It either takes a whole email address or blocks an IP when it is
viewing the page. Since the mail server isn't the IP viewing the page and
since the user portion changes it is useless.
I'm moving to the next tier of the machine, Exim. I'd like to have Exim
have a simple blacklist of domain that it will not send to. Just send them to
/dev/null since the bounce would only go back to the web forum
administrator... me.
I've searched high and low for a recipe for doing this quickly but to no
avail. Any pointers?
