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

Defect-free software does not exist.

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.

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.

However, writing software without defects is not sufficient. In my experience, it is at least as difficult to write software that is safe - that is, software that behaves reasonably under adverse conditions.

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.

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.

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

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

Sure, but competition is good for the user.

As of today, the Postfix mail transport agent has almost 50,000 lines of code, comments not included.

Like all software, Qmail can survive only when it keeps up with changing requirements.

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

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.

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

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.

One bug in an SMTP server can open up the whole machine for intrusion.

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

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

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

Lack of documentation is becoming a problem for acceptance.

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

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.

My reply is: the software has no known bugs, therefore it has not been updated.

Adding functionality is not just a matter of adding code.

You are not here merely to make a living. You are here in order to enable the world to live more amply, with greater vision, with a finer spirit of hope and achievement. You are here to enrich the world, and you impoverish yourself if you forget the errand.

I took Laura on a trip once where we followed the Immigrant Trail for about six hundred miles. She really learned a lesson. People forget too often how it was back then.

My biggest loss was the Olympics. I just can't forget losing. I never will.

Yes, but don't forget I also have the luxury of the worlds finest band when it gets lonely.

It's part of the calling to at least do a few songs in the show that give people some hope. There's so much hurt in this world and... music is such a great healing balm and a great way to forget your troubles.

Countries under foreign command quickly forget their history, their past, their tradition, their national symbols, their way of living, often their own literary language.

Forget the lottery. Bet on yourself instead.

Don't forget that the only two things people read in a story are the first and last sentences. Give them blood in the eye on the first one.

It makes me forget that I'm not going to be a major star and lead female in films whether it was 20 years ago, 10 years ago, five or in the future.

What kind of people do they think we are? Is it possible they do not realize that we shall never cease to persevere against them until they have been taught a lesson which they and the world will never forget?

Sometimes songwriters and singers forget that. They get a melody in their head and the notes will take precedence, so that they wind up forcing a word onto a melody. It doesn't ring true.

Seeking to forget makes exile all the longer; the secret of redemption lies in remembrance.

I think we typically, as Northerners, stereotype what the South is in so many negative ways. We kind of forget all the beautiful things that they contribute to make this country a country.

I must be careful not to get trapped in the past. That's why I tend to forget my songs.

When it's your chance to step up to the plate, just hit it out of the park, and everybody will forget about everything that came before.

I do not bring forgiveness with me, nor forgetfulness. The only ones who can forgive are dead; the living have no right to forget.

My focus is to forget the pain of life. Forget the pain, mock the pain, reduce it. And laugh.

I forget a book as soon as I finish writing it, which is not always a good thing.

Usually in a battle sequence when a bomb is going off, you forget you're acting.

Don't ever forget two things I'm going to tell you. One, don't believe everything that's written about you. Two, don't pick up too many checks.

Nothing fixes a thing so intensely in the memory as the wish to forget it.

How quickly we forget God's great deliverances in our lives. How easily we take for granted the miracles he performed in our past.

And let us not forget the Social Security system. Recent studies show that undocumented workers sustain the Social Security system with a subsidy as much as $7 billion a year. Let me repeat that: $7 billion a year.