qmail needs certain user and group account to be added before installation of the software. Add the users and groups with the following commands: mkdir /var/qmail && groupadd nofiles && useradd -g nofiles -d /var/qmail/alias alias && useradd -g nofiles -d /var/qmail qmaild && useradd -g nofiles -d /var/qmail qmaill && useradd -g nofiles -d /var/qmail qmailp && groupadd qmail && useradd -g qmail -d /var/qmail qmailq && useradd -g qmail -d /var/qmail qmailr && useradd -g qmail -d /var/qmail qmails Install qmail by running the following commands: make setup check && ./config-fast `hostname` && cd /var/qmail && touch .qmail-postmaster .qmail-mailer-daemon .qmail-root && chmod 644 .qmail-* && ln -s /var/qmail/bin/sendmail /usr/sbin/sendmail && mv /var/qmail/boot/home /var/qmail/rc && for mandir in 1 5 7 8; do mv /var/qmail/man/man$mandir/* \ /usr/man/man$mandir; done && rm -rf /var/qmail/man