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"One bug in an SMTP server can open up the whole machine for intrusion."
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"The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission."

"It's great to just disappear, grab a suitcase, switch the answering machine on and just go somewhere else."

"You can't expect to hit the jackpot if you don't put a few nickels in the machine."

"Before you can hit the jackpot, you have to put a coin in the machine."

"When man wanted to make a machine that would walk he created the wheel, which does not resemble a leg."

"Among all the machines, motorcar is my favorite machine."

"Machines take me by surprise with great frequency."
Explore more quotes by Wietse Venema


"When I write software, I know that it will fail, either due to my own mistake, or due to some other cause."


"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."


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


"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."


"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."


"Windows favors multi-threading, which means that a service is implemented by one single process."


"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."


"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."


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