This is a qmail nullclient.  It just sends mail to a smarthost which
is supposed to run qmqpd.  

You can build the binary rpm by running

rpmbuild --rebuild mini-qmail-*.src.rpm

where replace * by the current version of the src.rpm.  

Warning: The rpm by installs in /var/mini-qmail.  To change this, you
need to modify the line

%global mini_qmail_home /var/mini-qmail

in the spec file.

When the binary rpm gets installed, the command 

(cd /var/mini-qmail/bin; ./config-idhost) 

is run, and it should put the FQDN of the host in
control/idhost.  If it fails for some reason, you can run

(cd /var/mini-qmail/bin; ./config-idhost-fast yourhostname.yourdomain)

Then, to specify the  qmqpserver, run

(cd /var/mini-qmail/bin; ./config-qmqpserver qmqpserver.domain)

where qmqpserver.domain is the FQDN of the qmqpserver.  Another
possibility is that before building the binary rpm, you modify the
line

%define qmqpserver ''

to 

%define qmqpserver qmqpserver.domain

in the spec file, where qmqpserver.domain is the FQDN of the qmqpserver.
Then, after  the binary rpm is installed, the command 

(cd /var/mini-qmail/bin; ./config-qmqpserver qmqpserver.domain)

is run automatically.

It goes without saying that if you have more complicated arrangements
(like more than one qmqp server), you need to do the configuration yourself.

Finally, I would just like to remind you that if you are using pine, then 
you want to set user-domain to the qmqp server's FQDN.

