Open the file master.cf available at the following path:
/opt/trend/imss/postfix/etc/postfix
Add the following line at the end:
587 inet n - n - 200 smtpd
Open then the port on the firewall:
/opt/TrendMicro/GoldenGate/bin/fwPortConf add tcp 587
Restart postfix with the following command line:
postfix restart
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