The Postfix security model is based on keeping software simple and stupid.

Coming back to the topic of computer security, the TCP Wrapper is an example of such a safety net. I wrote it when my systems were under attack by someone who appeared to walk through walls.

This will surprise some of your readers, but my primary interest is not with computer security. I am primarily interested in writing software that works as intended.

The challenge with Postfix, or with any piece of software, is to update software without introducing problems.

Postfix keeps running even if one Postfix process dies; Windows requires that someone restarts the service.

Writing software that's safe even in the presence of bugs makes the challenge even more interesting.

For many people my software is something that you install and forget. I like to keep it that way.