Tako rzecze William Lederer (2014-04-28, 09:09):
And I again point out a software non-disaster qmail, whose author offered a bug bounty. Secure programs can be written in C.
I think you should stop gloryfying qmail, it has known bugs, violates some RFC's and the author (who turns out to be rather arrogant here) wouldn't pay out the bounty:
http://www.dt.e-technik.uni-dortmund.de/~ma/qmail-bugs.html