This procedure ensures that your daemon runs only to accept connections from the local host.
For more information, see Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.4.
# svcadm disable -t sendmail-client
# cd /etc/mail/cf/cf # cp submit.mc submit-host-domain.mc
Change the listening host IP address to the msp definition.
# grep msp submit-host-domain.mc FEATURE(`msp', `[#.#.#.#]')dnl
# make submit-host-domain.cf
# cp /etc/mail/submit.cf /etc/mail/submit.cf.save # cp submit-host-domain.cf /etc/mail/submit.cf
# svcadm enable sendmail-client
For more information, see submit.cf Configuration File in Version 8.12 of sendmail.