The current situation:
The community I'm coding for has several sub communities with their own subdomains. Usually you could configure your webserver to allow requests between these subdomains. The community provider seems unable to provide this.
The current solution
To avoid CORS errors, we now using YQL for GET requests. This is approved by the community provider who have to review every script submitted by coders like me. This works already fine.
The current problem
I only figured out how to do GET requests using YQL. But is it possible to also POST data to another subdomain using YQL? And if it is, how do I do that?