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Incoming Mail Settings Error - SunCertPathBuilderException


I'm running into this issue while configuring Incoming Email with secure_pop in JIRA. Any workaround for this issue? I'm getting below error;

Note: I already added certificate to keystore in JIRA, and i can see on page SSL. This certificate same with Exchange server. and generated from Comodo.


Unfortunately no connection was possible. Review the errors below and rectify:

  • SunCertPathBuilderException: unable to find valid certification path to requested target




1 answer

@Ismailcan Sezer 

Hi Ismailcan


welcome to the Atlassian community.

Can you verify that the added entry in your keystore is correct. You can use the SSLPoke class provided at to double check that


All the best



Hi Kurt,

i verified keystore its seems correct, and SSLPoke class result is Successfully connected on Jira and Exchange server. But issue still exist.

Java version is : jre1.8.0_121 



Hi Ismailcan


i assume you did restart your Jira instance after you modified the keystore - right?


Is the Java binary that you use to run SSLPoke, the same that Jira uses?

Are there any alternative keystores defined?





Yes, restarted server after modified. 

How can i check which java use in Jira? In Windows server Java_Home folder is C:\ProgramFiles\Java\jre1.8.0_121 but in Jira JRE folder is different. I already imported trust certificate to both folder lib\security\cacerts file. 

And keystore path is : C:\Program Files\Atlassian\JIRA\jira.jks , i was configured for HTTPS WebServer. 


i tried to changed keystore path with \Atlassian\Jira\jre\lib\security\cacerts file, and imported to in trusted certificate and key pair but still same problem exists. 

also i tried to changed Java_Home path with \Atlassian\JIRA\jre.

After all i have done i restart Services, and SSLPoke test seems to be successfull.

@Ismailcan Sezer 


Sorry for my late response.

Just to double check, the ssl certs have been added to the keystore that is referenced in the jira configuration and if you run the sslpoke test with that store and the corersponding java binary it works - right?




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