Hello, everyone, I have a box running 2.2.3 and encounter the following problem.
The box is behind a firewall (ISA), and is under attack frequently ( a lots of SMTP connections). When there are a lot of SMTP connection requests arriving at the box, Postfix does not reject them, instead it put these requests on hold. But to the firewall, it seems these connections are being set up, therefore they occupy some resources, when there are too many of these requests, the firewall freezes. I am looking for ways to get Postfix reject SMTP connections explicitly when Maxproc is reached, and send a server busy message along with the rejection message. How can I do this? Thanks a lot. Jie Wang
