Adding functionality is not just a matter of adding code.

I don't expect an overnight change of all desktops to what the US Military used to call B3 level security. And even that would not stop users from shooting themselves into the foot.

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

Most of the effort in the software business goes into the maintenance of code that already exists.

I want to avoid locking people into solutions that work only with Postfix. People should have a choice in what software they want to use with Postfix, be it anti-virus or otherwise.

At the time the Sendmail program had a very poor reputation with respect to security, with four root vulnerabilities per year for two successive years.

Lack of documentation is becoming a problem for acceptance.