Qmail is Copyright 1996, D. J. Bernstein. -- Unfortunately (from SPI's point of view) Dan Bernstein does not include a conventional licence for qmail, so instead you must examine his published documentation on the subject to determine your rights to use his software. The right to distribute unmodified copies of the qmail-1.01 source is granted here: ftp://koobera.math.uic.edu/www/qmail/dist.html In addition, Dan will approve distribution of specific binary packages, which he should have done for the Debian package that contains this file by the time you get to read it. He also states (see ftp://koobera.math.uic.edu/www/softwarelaw.html) the following: What does all this mean for the free software world? Once you've legally downloaded a program, you can compile it. You can run it. You can modify it. You can distribute your patches for other people to use. If you think you need a license from the copyright holder, you've been bamboozled by Microsoft. As long as you're not distributing the software, you have nothing to worry about. Of course, this only applies to people under US jurisdiction, but Dan claims that similar laws are in effect in most of the countries that take any notice of copyright, so I suppose that one can assume that this encapsulates his wishes on the subject. Cheers, Phil.