Your Jira server is somehow not able to talk to itself over your network. It can't resolve its own server name, or has been firewalled off from itself.
Try a "trace route" from the Jira server back to itself. This will usually tell you why it can't see itself.
Thanks for your answer!
Can you give me more information what i need to check step by step.
I am trying to resolve this a littele trouble more than 3 months
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Log into the server and test the routing back to itself.
If, for example, your Jira base url is "https://dave/jira", then try simply "curl https://dave/jira". I expect you will get an error or a block of text that is an error message, either of which will tell you what is wrong (can't resolve the name, doesn't respond, responds with an invalid url, etc)
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