This is not a full blown replacement for sendmail, rather it is a limited replacement for use in certian cicumstances. It does not understand CC or BCC, or much else really. It will block until the message has been dropped onto the receiving server. Not suitable for use with large mail volumes.
This reason this script exists is to allow machines that only send mail from daemons, like cron, to communicate. Why install a full on mail package when something this simple would do?
No man page, no make install, just download this script to /usr/sbin and you're ready to rock.
wget -O /usr/sbin/sendmail http://cdn.edoceo.com/bin/sendmail.pl chmod 0755 /usr/sbin/sendmail
Run this simple command:
rm -i `which sendmail`