Here''s how to use tcprules command:
#cd /etc/tcpcontrol
#vi smtp.rules
#tcprules smtp.cdb smtp.tmp < smtp.rules
You can do the same for pop3.cdb
on the new linux os below is how you update it
#cd /etc/tcprules.d
#vi tcp.smtp
#tcprules tcp.smtp.cdb tcp.smtp.tmp < tcp.smtp