I ran some speed test lately and found out that not much of my website was handle by the CDN I had previously setup. I’m using AmazonS3 service which I configured in the settings field of W3 Total Cache. For some reason, it seems to have stop working properly. I ran a test from within W3 Total Cache ("Test S3 upload" in the CDN tab of the settings) and all I’m getting now is this error message: “Error: Unable to resolve hostname: name_of_my_wordpress”
Any idea how to fix this?