Run rpmbuild --rebuild qmail-1.03-112patch_14_15.src.rpm This edits the qmail binaries for the qmail uids/gids in your system (or adds the qmail users/groups if they do not yet exist), and creates the binary rpm you want to install on your system; the name of this binary rpm is qmail-1.03-112patch_14_15.i386.rpm and you install it with rpm -Uvh qmail-1.03-110patch_14_15.i386.rpm This binary rpm is usually not suitable to install on other machines since the qmail uids might be different from your system's. So if you have a bunch of, say, FC 2 Linux boxes, then on each you would have to build the i386.rpm as above, but if the qmail users are the same on each box as on the build box, then you can install qmail-1.03-112patch_14_15.i386.rpm directly. mw@csi.hu