postfix-2.9.5-alt1.src specfile-useradd-n warn -n in useradd is compat option and can be removed any time. Use -N instead.; postfix-2.9.5-alt1.x86_64 init-lsb warn /etc/rc.d/init.d/postfix: lsb init header missing. See http://www.altlinux.org/Services_Policy for details.; postfix-2.9.5-alt1.x86_64 rpm-filesystem-conflict-symlink-symlink warn value of symlink /etc/aliases is different from the same symlink in the package exim-common-4.76-alt3.x86_64. Moreover, the packages have no explicit conflicts with each other. You should add explicit conflicts, or, if conflicts are avoidable, consider using alternatives.;