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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. "

Wietse Venema

Inside

Safety

Possible

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

Wietse Venema

Bug

Whole

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

" 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. "

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

" Lack of documentation is becoming a problem for acceptance. "

" Adding functionality is not just a matter of adding code. "