adfs login error from server side

I was trying to login with adfs from server side (c#) on https://oneclick.au.auth0.com/oauth/token, but i am getting error “getaddrinfo ENOTFOUND win-s9jsjqo9n0g.matrix.loc win-s9jsjqo9n0g.matrix.loc:443”.
i have configured adfs as default directory in tenent configuration .
kindaly help as soon as possible