Where is qmail/ezmlm/djbdns?
Dan J. Bernstein used to distribute all software he has written with a restrictive license which does not allow modified binaries to be distributed. In november 2007 however, Bernstein said “[…] i have decided to put all of my future and […] past software into the public domain”. See FAQ from distributors for his distribution terms. As of 2008-09, daemontools, djbdns and ucspi-tcp are shipped with Debian lenny (in main). As of this writing (2008-09), qmail nor ezmlm is shipped with Debian main; see Bug #457318 (ITP qmail) and Bug #469193 (ITP ezmlm-idx) for the current status. As of 2008-09, publicfile was still not free software.