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+qmail lets each user control all addresses of the form user-anything.
+Addresses that don't start with a username are controlled by a special
+user, alias. Delivery instructions for foo go into ~alias/.qmail-foo;
+delivery instructions for user-foo go into ~user/.qmail-foo. See
+dot-qmail.0 for the full story.
+qmail doesn't have any built-in support for /etc/aliases. If you have a
+big /etc/aliases and you'd like to keep it, install the fastforward
+package, available separately. /etc/aliases should already include the
+aliases discussed below---Postmaster, MAILER-DAEMON, and root.
+If you don't have a big /etc/aliases, you'll find it easier to use
+qmail's native alias mechanism. Here's a checklist of aliases you should
+set up right now.
+* Postmaster. You're not an Internet citizen if this address doesn't
+work. Simply touch (and chmod 644) ~alias/.qmail-postmaster; any mail
+for Postmaster will be delivered to ~alias/Mailbox.
+* MAILER-DAEMON. Not required, but users sometimes respond to bounce
+messages. Touch (and chmod 644) ~alias/.qmail-mailer-daemon.
+* root. Under qmail, root never receives mail. Your system may generate
+mail messages to root every night; if you don't have an alias for root,
+those messages will bounce. (They'll end up double-bouncing to the
+postmaster.) Set up an alias for root in ~alias/.qmail-root. .qmail
+files are similar to .forward files, but beware that they are strictly
+line-oriented---see dot-qmail.0 for details.
+* Other non-user accounts. Under qmail, non-user accounts don't get
+mail; ``user'' means a non-root account that owns ~account. Set up
+aliases for any non-user accounts that normally receive mail.
+Note that special accounts such as ftp, www, and uucp should always have
+home directories owned by root.
+* Default. If you want, you can touch ~alias/.qmail-default to catch
+everything else. Beware: this will also catch typos and other addresses
+that should probably be bounced instead. It won't catch addresses that
+start with a user name---the user can set up his own ~/.qmail-default.