SAVE COPIES OF YOUR OUTGOING MAIL! Like any other piece of software (andinformation generally), the qmail system comes with NO WARRANTY. It'smuch more secure and reliable than sendmail, but that's not saying much.Things you have to decide before starting:* The qmail home directory, normally /var/qmail. To change thisdirectory, edit conf-qmail now.* The names of the qmail users and the qmail groups. To change thesenames, edit conf-users and conf-groups now.To create /var/qmail and configure qmail (won't interfere with sendmail): 1. Create the qmail home directory:       # mkdir /var/qmail 2. Read INSTALL.ids. You must set up the qmail group and the qmail    users before compiling the programs. 3. Compile the programs and create the qmail directory tree:       # make setup check 4. Read INSTALL.ctl and FAQ. Minimal survival command:       # ./config 5. Read INSTALL.alias. Minimal survival command:       # (cd ~alias; touch .qmail-postmaster .qmail-mailer-daemon .qmail-root)       # chmod 644 ~alias/.qmail* 6. Read INSTALL.mbox and INSTALL.vsm. 7. Read INSTALL.maildir. 8. Copy /var/qmail/boot/home (or proc) to /var/qmail/rc.To test qmail deliveries (won't interfere with sendmail): 9. Enable deliveries of messages injected into qmail:       # csh -cf '/var/qmail/rc &'10. Read TEST.deliver.To upgrade from sendmail to qmail:11. Read SENDMAIL. This is what your users will want to know about the    switch from sendmail to qmail.12. Read REMOVE.sendmail. You must remove sendmail before installing    qmail.13. Read REMOVE.binmail.14. Add            csh -cf '/var/qmail/rc &'    to your boot scripts, so that the qmail daemons are restarted    whenever your system reboots. Make sure you include the &.15. Make qmail's ``sendmail'' wrapper available to MUAs:       # ln -s /var/qmail/bin/sendmail /usr/lib/sendmail       # ln -s /var/qmail/bin/sendmail /usr/sbin/sendmail    /usr/sbin might not exist on your system.16. Set up qmail-smtpd in /etc/inetd.conf (all on one line):            smtp stream tcp nowait qmaild /var/qmail/bin/tcp-env            tcp-env /var/qmail/bin/qmail-smtpd17. Reboot. (Or kill -HUP your inetd and make sure the qmail daemons    are running.)18. Read TEST.receive.That's it! To report success:       % ( echo 'First M. Last'; cat `cat SYSDEPS` ) | mail djb-qst@cr.yp.toReplace First M. Last with your name.If you have questions about qmail, join the qmail mailing list; seehttp://pobox.com/~djb/qmail.html.