Get "We couldn't deliver this payload: Invalid host name." error message in Github
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
Problem
The problem happened when added a Github account in DVCS accounts page. The following will be showing the error message "We couldn't deliver this payload: Invalid host name.":

Some issues is not synchronise with the Github.
Diagnosis
Environment
JIRA 7.0.0
JIRA DVCS Connector Plugin - 3.3.16-D20150922T053442
Test with "localhost" or "IP address".
Cause
The problem was caused by the DNS name.
Solution
Resolution
Fix the DNS name or test with server IP address.
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