I am getting several exceptions on the CMS Master server, such as the one shown below.
ManagedPoolThread #12 00:08:09 ERROR Exception in UrlAgent (url: /sitecore/service/keepalive.aspx) Exception: System.Net.WebException Message: The remote server returned an error: (503) Server Unavailable. Source: System at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) at System.Net.WebClient.DownloadData(Uri address) at Sitecore.Web.WebUtil.ExecuteWebPage(String url, NameValueCollection headers) at Sitecore.Tasks.UrlAgent.Run()
My Sitecore CMS is version 7.0 I have separate Master Server and Content Delivery servers configured as well. This error does not occur within the Content Delivery servers
Any ideas what could be be causing this?