Specific site won't embed because it blocks unknown user agents

There’s a site whose content my community posts regularly, and it won’t Onebox despite being whitelisted to force it. Its OG validates on Iframely.

Here’s an example:


Sorry if my searches for a previous answer to this were unsuccessful. Any ideas? I’m running 1.9.

Usually this is because it is missing a text description. Does iframely validate the text description field?


Yeah, it does:

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Sure can you take a quick look @vinothkannans?

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That website returns 403 Forbidden response whenever Discourse try to fetch the URL with request headers {"User-Agent"=>"Discourse Forum Onebox v2.0.0.beta1"}. Looks like they are blocking all the unknown user agents.