Hi All:
What's the easiest way to block a maildomain from using our smtp server? We have some customers that have infected PC's that are sending out spam. We want to force them to use their ISP's outgoing mailserver but still allow them to connect to pickup mail from their inbox.
We have been blocking their IP's in /home/vpopmail/etc/tcp.smtp but since the IP's keep changing this is becoming tedious.
Best Regards,Jeff Koch, Intersessions
