The /usr/lib/sendmail.cf file on HP-UX systems needs editing only to specify the name of the Internet relay system (see the relay.net.provider instructions above) and to add the Cw line, as described above. In addition, edit the /etc/netbsdsrc file and comment out the line which creates the frozen sendmail configuration (/usr/lib/sendmail -bz). Remove any /etc/sendmail.fc file before rebooting.