I have a CentOS server that runs postfix and whenever a null recipient is sent to it, the server freaks out. Instead of simply rejecting the mail, it doesn't know what to do with it and tries over and over again and if enough of these pile up, then it pegs the CPU.
The front end is from a vendor and apparently cannot be changed so I'm stuck with this crappy problem. The users don't enter an email address and it comes unglued.
What can I change in my postfix config that will automatically reject these null recipient addresses?