Hello, we have a LinkedIn integration with our Production org.
When trying to share an article on LinkedIn using the 'https://www.linkedin.com/sharing/share-offsite/?url={url}', it seems Salesforce is blocking the LinkedIn bot from accessing our site.

We have used the LinkedIn Post Inspector to check and it returns 'Unable to connect to server. Bad DNS, bad gateway, or invalid server address.'

Seems like the production site domain is blocking LinkedIn. The same scenario however works in the Sandbox.


Why is this only occurring for Production (Are there any configurations to allow this in the Production site)?

Can anyone share a Java client connecting to Salesforce pub-sub-api pls?

Challenge Not yet complete... here's what's wrong:
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: LBKCYITN

Can anyone share a Java client connecting to Salesforce pub-sub-api pls?

Challenge Not yet complete... here's what's wrong:
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: LBKCYITN

I am stucking at this point. I tried many times but did not get answer.Can someone help me. 

Has anyone completed this trail? I am stomped on challenge number 3, regarding created the process for fulfillment. Any pointers or guidance would be appreciated.