qmsmac is a sendmail/smail aliases clone for qmail. It lets you reuse
your old /etc/aliases file with qmail. You can switch individual aliases
to qmail's user-controlled mechanism at your leisure.

qmsmac is more reliable than sendmail. sendmail can't deal with long
aliases, or deeply nested aliases, or deeply nested :include: files;
qmsmac has no limits other than memory. sendmail can produce corrupted
alias files if the system crashes; qmsmac is crashproof.

qmsmac's newaliases, which uses cdb, is much faster than sendmail's
newaliases. Even better, qmsmac deliveries don't pause while newaliases
is running.

qmsmac supports :include: files, duplicate elimination, and 822-style
addresses. It also supports sendmail V8's automatic owner-list rewriting
and comments in :include: files.

qmsmac doesn't support sendmail-style file or program deliveries; these
mechanisms are inherently insecure. You can use qmail's secure built-in
delivery mechanisms instead.
