Recently we aquired a new domain from another ISP, just to host their website. We host the website on our FreeBSD server, and now someone is apparently spamming through the domain. Someone is sending emails, for example, from "risingstocks@domain.com" and many other different email addresses. This is becoming a major problem and I was wondering if anyone had a suggestion on how to lock the domain down, so that someone can not do that. Apparently the return address goes to our
www@mydomain.com (World Wide Web owner) email address, so I'm not sure if that helps at all. We are running FreeBSD 4.11 with Exim 4.xx.
Any suggestions would be helpful
Thanks