I have configured CD server according to the official document and spreadsheet and also disabled anonymous IIS access to admin, login, shell folders and default.aspx file.
However, after changing IIS setting now I can see an error message in the Sitecore log as shown below:
WARN Request is redirected to document not found page. Requested url: /login.aspx?ReturnUrl=%2fsitecore%2f, User: extranet\Anonymous, Website: website
I am using sitecore version 8.2.7 and very new to this. Now I have no clue for how to fix this problem. Any thoughts?