The ICEpfix package is a drop-in replacement for Sun's Sendmail packages. The default configuration is similar to the mtuclient.cf Sendmail configuration. It does not accept remote connections, and sends all mail to a relay called smtp.$mydomain, where $mydomain is your fully qualified domain name minus the first component.
Before you install the package, you'll need to uninstall any Sendmail packages that are installed.
% pkginfo | grep -i sendmail system MTUsmclt sendmail client config for MTU computers system SUNWsndmr Sendmail root system SUNWsndmu Sendmail user % sudo pkgrm MTUsmclt SUNWsndmr SUNWsndmu
ICEpfix installs in /opt/ICEpfix, and can be installed during JumpStart. All configuration files are in /opt/ICEpfix/etc. See main.cf and master.cf for details. Postfix includes Sendmail compatibility commands, and symbolic links are added in the standard locations for sendmail, newaliases, and mailq.
During install, the package will add a local user 'postfix' and group 'postdrop', unless they already exist in a configured name service. The users will not be added during JumpStart.
After installing the package, start Postfix:
% sudo /etc/init.d/postfix start
For more information, look in /opt/ICEpfix/man or at the Postfix website.