Remote managment Exchange 2013 SP1 from C# code using Power-Shell.

Hello,

Sorry if I am describing something wrong, but it is first time I am using Microsoft development forum.

I am trying to built library that will manage Exchange remotely using  C# code (VS 2012) and Power-Shell ver.4.0. My workstation and the actual Exchange server physically placed in different domains. In order to test functionalities I am using user that is member of all administrating and management groups in the appropriative domain. Remote Power-Shell is enabled on Exchange.

In order to connect to the Service I am using that part of code :

        internal static bool RedirectionUrlValidationCallback(string redirectionUrl)
        {
            bool result = false;

            var redirectionUri = new Uri(redirectionUrl);  
            if (redirectionUri.Scheme.Equals("https"))
            {
                result = true;
            }

            return result;
        }
		
	internal static ExchangeService ConnectToService(ExchangeVersion version,
                                                         string userName,
                                                         string emailAddress,
                                                         string password,
                                                         string domainName,
                                                         ref Uri autodiscoverUrl)
        {
            ExchangeService service;

            try
            {
                service = new ExchangeService(version);

                service.Credentials = new WebCredentials(userName, password, domainName);

                if (autodiscoverUrl.IsNull())
                {
                    var ads = new AutodiscoverService();

                    // Enable tracing. 
                    ads.TraceEnabled = true;
                    // Set the credentials. 
                    ads.Credentials = service.Credentials;
                    // Prevent the AutodiscoverService from looking in the local Active Directory 
                    // for the Exchange Web Services Services SCP. 
                    ads.EnableScpLookup = false;
                    // Specify a redirection URL validation 
                    //callback that returns true for valid URLs. 
                    ads.RedirectionUrlValidationCallback = RedirectionUrlValidationCallback;

                    // Get the Exchange Web Services URL for the user’s mailbox. 
                    var response = ads.GetUserSettings(emailAddress, UserSettingName.InternalEwsUrl);

                    // Extract the Exchange Web Services URL from the response. 
                    autodiscoverUrl = new Uri(response.Settings[UserSettingName.InternalEwsUrl].ToString()); 

                    // Update  Service Url
                    service.Url = autodiscoverUrl;
                }
                else
                {
                    service.Url = autodiscoverUrl;
                }
            }
            catch (FormatException fe) // The user principal name(email) is in a bad format. UPN format is needed.
            {
                LoggingFactory.LogException(fe);

                return null;
            }
            catch (AutodiscoverLocalException ale)
            {
                LoggingFactory.LogException(ale);

                return null;
            }
            catch (Exception e)
            {
                LoggingFactory.LogException(e);

                return null;
            }

            return service;
        }

Then I am trying to reach existing mailbox of that user, using this part of code :

        try
        {
            var runSpace = getRunspace();
            var pwShell = PowerShell.Create();

            pwShell.Runspace = runSpace;

            var command = new PSCommand();

            command.AddCommand("Get-Mailbox");
            command.AddParameter("Identity", userPrincipalName);
            command.AddParameter("RecipientTypeDetails", recipientType);

            pwShell.Commands = command;
            
            var result = pwShell.Invoke();

            if (result.IsNotNull() && result.Any())
            {
		// TODO : fill appropriative DTO and return it.
            }
            else
            {
		// TODO : send back appropriative error.
            }
            closeRunSpace(runSpace);
        }
        catch (Exception e)
        {
		// TODO : log the exception and send back appropriative error.
        }
	private Runspace getRunspace()
        {
            var runSpaceConfig = RunspaceConfiguration.Create();
            var runSpace = RunspaceFactory.CreateRunspace(runSpaceConfig);

            PSSnapInException snapEx;
            var psInfo = runSpaceConfig.AddPSSnapIn("Microsoft.Exchange.Management.PowerShell.E2010", out snapEx);

            runSpace.Open();

            return runSpace;
        }

        private void closeRunSpace(Runspace runSpace)
        {
            runSpace.Close();
            runSpace.Dispose();
        }

With this part I had problem. I received exception that appropriative Snap-in is not installed on my computer. I had no installation disk of Exchange in order to install Management Tool (as I understand this is the way to add needed part) so I changed run space activation to that part of code :

        private Runspace getRunspace()
        {
            var newCredentials = (PSCredential)null;
            var connectionInfo = new WSManConnectionInfo(new Uri("http://exchange.domainname.local/powershell?serializationLevel=Full"),"http://schemas.microsoft.com/powershell/Microsoft.Exchange",
                                                         newCredentials);
            connectionInfo.AuthenticationMechanism = AuthenticationMechanism.Kerberos;
            var runSpace = RunspaceFactory.CreateRunspace(connectionInfo);

            runSpace.Open();

            return runSpace;
	}

Now I am receiving exception :

"Connecting to remote server exchange.domainname.local failed with the following error message :
[ClientAccessServer=exchange,BackEndServer=exchange.domainname.local,RequestId=....,TimeStamp=...]
Access is denied. For more information, see the about_Remote_Troubleshooting Help topic."

Please help me to understand what I am doing wrong.

Thank you.

Alexander.