I had an issue for quite a while with pingbacks in dasBlog:
Request for the permission of type 'System.Net.WebPermission, ...
at newtelligence.DasBlog.Runtime.Proxies.WeblogUpdatesClientProxy.Ping(String weblogName, String weblogUrl)
at newtelligence.DasBlog.Runtime.BlogDataServiceXml.PingWeblogsWorker(Object argument)
The action that failed was:
The type of the first permission that failed was:
It comes up that medium trust allows opening connections only to originHost (I guess localhost).
Here's how I solved it:
|<IPermission class="WebPermission" ...|
and add some additional URIs:
These addresses were in %dasBlog%\SiteConfig\WebServices.xml