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Email Alerts Are Not Getting Delivered Due to Following Errors in FCDB Logs- "Unknown SMTP host" | "Unable to open connection to smtp server". (Doc ID 2716947.1)

Last updated on OCTOBER 05, 2020

Applies to:

Oracle FLEXCUBE Direct Banking - Version DB 12.0.1 to DB 12.0.3 [Release DB 12]
Information in this document applies to any platform.


Email alerts are not getting delivered to the end users for transactions like Funds transfer, Reset Password etc.


Exceptions recorded in FCDB Error logs:

javax.mail.MessagingException: Unknown SMTP host: <HOST NAME>;
 nested exception is: <HOST NAME>
at com.sun.mail.smtp.SMTPTransport.openServer(
at com.sun.mail.smtp.SMTPTransport.protocolConnect(
at javax.mail.Service.connect(
at com.iflex.fcat.infra.JFMailer.createSession(
at com.iflex.fcat.infra.JFMailer.<init>(
at com.iflex.fcat.infra.JFMailer.getInstance(
at com.iflex.fcat.xjava.alerts.EmailAlertNotifier.<init>(

com.iflex.fcat.infra.JFException: Unable to open connection to smtp server Unknown SMTP host: <HOST NAME>
at com.iflex.fcat.infra.JFMailer.createSession(
at com.iflex.fcat.infra.JFMailer.getMailContent(
at com.iflex.fcat.infra.JFMailer.sendMail(
at com.iflex.fcat.infra.JFMailer.sendMail(
at com.iflex.fcat.xjava.alerts.EmailAlertNotifier.processRequest(
at com.iflex.fcat.xjava.alerts.AlertNotifier.doNotification(




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