Procedure
- Verify and ensure the correctness of the administrator's SMTP notification settings. IM Security uses the notification settings to send email notification.
- Contact your mail administrator to verify whether SMTP server authentication is enabled. If so, verify that the credentials used are valid.
- Ping the SMTP server to ensure that the server can be resolved (through host name or IP address).
- Verify IM Security's SMTP port setting is matching the SMTP port being used (the default SMTP port is 25).
