pkgrm SUNWsndmu SUNWsndmr  (ignore warnings about dependencies between them).

See much-modified Makefile.

ln -s ../../opt/exim/bin/exim /usr/lib/sendmail

groupadd -g 1501 exim
useradd -g 1501 -u 1501 -c Exim -s /bin/false -d /dev/null exim

Must fix perms on /etc/exim/exim.conf to 644.

Must clean out exim bin dir before every make install, or it will age
the main binaries.

Must 
    mkdir /var/log/exim
    chgrp exim /var/log/exim
    chmod 775 /var/log/exim
    chmod g+s /var/log/exim