Did you recently update IDM versions?  There have been issues with Email in 4.8.7 and 4.9.  The solutions have been related to an older JAR containing the email classes the newer JAR is using I think.

Hi Vcc,

as mentioned by Geoff, in case of 4.8.7. there's an engine patch available:

https://www.netiq.com/documentation/identity-manager-48/releasenotes_idm487_0100_engine/data/releasenotes_idm487_0100_engine.html

In case of 4.9., there is some discussion/investigation going on for 4.9

 IDM 4.9 released 

and a KB article in "under investgation status" (not very helpful as of yet)

https://kmviewer.saas.microfocus.com/#/OCTCR56A627092

Best regards,
Philipp

Hi , 

It worked after we applied the patch  . Thanks for the help . 

Hi Vcc,

thanks for reporting back, glad you could solve the issue.

Best regards,
Philipp

Hi , 

We are receiving mail from the driver now , unfortunately our user app stopped working , it was throwing the below error 

Caused by: javax.mail.MessagingException: Could not connect to SMTP host: mailrelayout.volvocars.net, port: 25, response: 554
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2106) ~[javax.mail-1.5.6.jar:1.5.6]

Then we also applied the patch in user app , but still it is throwing error . Can you kindly assist here please .

Thanks .

554 Transaction failed (Or, in the case of a connection-opening response, "No SMTP service here")

Is there any explanation provided with the exception message, why your SMTP server rejects connections from you UserApp host? Otherwise you need to ask your SMTP admin for their logs. It could be rate limiting, spam false positives, ...