The server specified by ExternalPictureURL is not responding
We are having an issue with uploading pictures for certain Ebay listings. It will work for some, but fail for others. The issue is that Ebay supposedly is not able to communicate with the server that those images are hosted on, but this does not seem to be the case at all. We are making a UploadSiteHostedPicturesRequest call with the following payload: https://CENSORED/uploads/products/Lucky-Reptile-Thermo-Socket-Reflector-Mini-CHANGED-v1.jpg 983 The response is the following message: The server specified by ExternalPictureURL is not responding. Of course, we have checked to make sure that Ebay is able to communicate with our servers and that their request is not being blocked. Interestingly, our server logs seem to suggest that Ebay was able to retrieve the contents of this image: 126.96.36.199 - - [09/Mar/2018:12:02:52 +0000] "GET /uploads/products/Lucky-Reptile-Thermo-Socket-Reflector-Mini-CHANGED-v1.jpg HTTP/1.1" 200 95185 "
http://msa-b1.cgi5.ebay.com/ws/eBayISAPI.dll?EpsBasic&downgradeDomainTo=ebay.com&msaVersion=2&weburl=https://CENSORED/uploads/products/Lucky-Reptile-Thermo-Socket-Reflector-Mini-CHANGED-v1.jpg" "Mozilla/4.0 (compatible; MSIE 4.01; Windows NT)" This particular log entry was tied with the API call, so we know that it was this particular API call that generated the log entry above. When discussing this with Customer Services initially, they asked us to check the HTML codes, which just added to the confusion because the issue is that we are not able to upload certain images. We have tried all sorts of things to get this to work. From changing the connection scheme to use HTTPS (which should have already been the case) from changing the actual content of the image which, interestingly enough, stops this error from occurring. In short, for some reason or another, we are unable to upload images that we are hosting on our own server. Ebay's response suggests that the images are inaccessible, but we do not think this is the case. Has anyone experienced this before or have any idea what may be happening here?