Windows Server error: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host

Question

We have the following setup: Windows Web Server 2008 R2 with IIS 7.5 on which we are running an instance of Nopcommerce v3.8. We have a plugin that is used to send products listed in our online store to eBay. If a product has less images(1-2) everything is fine, but if the images are more(4-8) we get the "Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host." error message. We dont't get this issue when we test from a local installation of nopcommerce, so obviously this is a server configuration issue. I tried changing config settings on server and in web.config as suggested in some posts(Maximum request length exceeded) but none seemed to do the job. It will be great if someone can point me to a possible solution. Thanks.