today i was watching my mail.log and noticed something strange:
Some mails send from my ISPconfig server are being rejected from other mail servers with the reason of being SPAM. I started investigating the issue and noticed that some users have their spam strategy "accept" or have switched off the mail scanning BUT have forwarders to external mail servers
So i realized that my server is some kind of an open spam gateway.
Would not be a good idea to DENY forwarding IF the user has switched off the scanning OR has spam strategy to "accept" OR has a high spam hits level???