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Qmail out of the box works fine, so people will want to use it regardless of licensing restrictions, even when the software does not ship with their system software.

Wietse Venema

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Wietse Venema
Age: 73
Born: 1951
Born: January 1
Computer Scientist
Physicist
Holland
Wietse Zweitze Venema
People
Ships
Boxes
Works
Licensing
Fine
Restrictions
System
Restriction
Use
Ship
Doe
Regardless
Even
Software

More quotes by Wietse Venema

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The challenge with Postfix, or with any piece of software, is to update software without introducing problems.
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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.
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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.
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In a previous life I wrote the software that controlled my physics experiments. That software had to deal with all kinds of possible failures in equipment. That is probably where I learned to rely on multiple safety nets inside and around my systems.
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Sure, but competition is good for the user.
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My reply is: the software has no known bugs, therefore it has not been updated.
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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.
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Windows favors multi-threading, which means that a service is implemented by one single process.
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Like all software, Qmail can survive only when it keeps up with changing requirements.
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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.
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When I write software, I know that it will fail, either due to my own mistake, or due to some other cause.
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Defect-free software does not exist.
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Most of the effort in the software business goes into the maintenance of code that already exists.
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The Postfix security model is based on keeping software simple and stupid.
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I was going to visit IBM for six months as a visiting scientist. Now, six months is a lot of time, so I came with a whole list of projects that I might want to work on.
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For many people my software is something that you install and forget. I like to keep it that way.
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One bug in an SMTP server can open up the whole machine for intrusion.
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Adding functionality is not just a matter of adding code.
Wietse Venema
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Writing software that's safe even in the presence of bugs makes the challenge even more interesting.
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Lack of documentation is becoming a problem for acceptance.
Wietse Venema