When you upgrade OpsCenter, all SMTP-related configuration details (if they are already present in the nm.conf file from the previous version) are saved in the OpsCenter database in the nm_SmtpSettings table. The SMTP-related configuration details are subsequently removed from the nm.conf file.

You should specify the SMTP-related configuration details through the OpsCenter GUI and not in the nm.conf file. If you specify any SMTP details manually in the nm.conf file and they are already present in the nm_SmtpSettings database table, the configuration details from the nm.conf file will be ignored. On the next OpsCenter Server service start up, these SMTP details are removed from the nm.conf file. However, if the nm_SmtpSettings database table is empty, the SMTP details from the nm.conf file are inserted in the table on the next OpsCenter Server service start up. The SMTP-related configuration details are subsequently removed from the nm.conf file.