Sendmail
From Qmail-LDAP Wiki
sendmail is a small program designed to replace the /usr/sbin/sendmail binary.
Usually, you move the binary out of the way and symlink the replacement:
# cd /usr/sbin # mv sendmail sendmail.dist # ln -s /var/qmail/bin/sendmail .
This is enough for most common usages of sendmail while injecting local mail.
