Posted on: 6/6/2014 3:53:07 PM | Views : 2465

We have a .net web application hosted at Rackspace. Some users need to be authenticated across an AD domain that is different from Rackspace.
My code looks like this              
using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, mydomain)) { // validate the credentials ValidUser = pc.ValidateCredentials(UserName, Password); }//some code I am getting the error : LDAP server is unavailable. The server could not be contacted.
Now I have tried the following versions for mydomain string with no luck:
mydomain mydomain.org domainIPaddress 
What is the issue here?

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