XF 2.3 Image embed not working from some URLs with proxy ticked (but shows in edit mode)

[Mr Lucky]

If I have image proxy ticked, then images from do not show from specific URLs. For example (from imgur). This (obviously) shows fine here, but on all of my forums it only shows in edit mode. So I wonder if there is some other setting somewhere.

This is the page on my forum, first post here:

Theory & Impro - This is exactly how dissonant each interval is

First of all, I have no scientific evidence that anything of this is true... but I believe it is. Now, I have studied physics at university for a year, and I believe I've found a mathematical way, to find out exactly how dissonant two notes sound together. Below you can see all 13 different...

cafesaxophone.com

 

[Paul B]

Use the image proxy tester in the ACP.

It's possibly rate limiting from imgur, or some other error being returned.

 

[Mr Lucky]

Use the image proxy tester in the ACP.

It's possibly rate limiting from imgur, or some other error being returned.

http://i.imgur.com/oXyFDzl.png could not be fetched or is not a valid image. The specific error message was: Received unexpected response code 429 (Unknown Error)

But as you can see it is an image, and is showing OK here.

This happens with some other sites.

 

[Paul B]

A 429 error is too many requests.

Your server IP address has been rate limited.

 

[Mr Lucky]

This happens with some other sites.

e.g. This image also is not working on my site.

https://www.saxontheweb.net/attachments/851_29a-jpg.104609/ could not be fetched or is not a valid image. The specific error message was: cURL error 28: Operation timed out after 9002 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://www.saxontheweb.net/attachments/851_29a-jpg.104609/