Wsrtjtyk

I currently manage a program that analyses email data. One issue that came up early when developing this was that often an entry in the email's TO CC or BCC fields would not be an actual email address but a mailing list address of some sort. Because the application needs to accurately record how many people an email is being sent to, distribution lists have to be expanded so I can record the ultimate number of recipients the email is being sent to. I was able to deal easily with normal distribution lists but hit a snag with Dynamic Distribution Lists.

I have made a working routine that can do it. Here is the code:

    /// <summary>

    /// Get the List of A dynamic distribution Group in Key Value Pairs 

    /// the key is the CN

    /// the value is the filter for the membership of that group

    /// </summary>

    /// <returns>Dictionary of strings </returns>

    public List<DistributionList> GetDynamicDistributionLists(string strEmailAddress)

    {

        List<DistributionList> distributionLists = new List<DistributionList>();

        DomName = "dc=" + Settings.ImpersonatedUserDomain.Replace(".", ",dc=");



        using(var group = new DirectoryEntry("GC://" + DomName))

        {



            using(var searchRoot = new DirectoryEntry("GC://" + Settings.GlobalCatalogServer + "/" + DomName))

            using(var searcher = new DirectorySearcher(searchRoot, "(&(ObjectClass=msExchDynamicDistributionList)(proxyAddresses=smtp:" + strEmailAddress.Trim() + "))"))

            using(var results = searcher.FindAll())

            {

                foreach(SearchResult result in results)

                {

                    if(result.Properties.Contains("cn") && result.Properties.Contains("msExchDynamicDLFilter"))

                    {

                        DistributionList dl = new DistributionList();



                        dl.DType = DLT.DDL;

                        dl.CN = result.Properties["cn"][0].ToString();

                        dl.FILORDN = result.Properties["msExchDynamicDLFilter"][0].ToString();



                        distributionLists.Add(dl);

                    }

                }

            }



        }



        return distributionLists;



    }

This works but I have to have a VPN open into the Global Catalog Server if I want to run this code remotely to the site. Occasionally I will want to run remotely and all of my other code can run remotely using EWS without needing a VPN open. So I am trying to find a way of accessing the server using ADWS.

Could anyone help me locate some code that would allow me to run the above code using ADWS so I don't need a VPN open.

Thanks,

Siv

So I assume a firewall is blocking access from the outside world, which is understandable. When you use "GC://", it uses port 3268 by default. You can try other ports to see if they are open:

• 389: The default port when using LDAP://
  


• 636: LDAP over SSL. You use it like LDAP://domain.com:636
  


• 3269: GC over SSL. You use it like LDAP://domain.com:3269
  

It's possible either 636 or 3269 is open, but there might be complications depending on the SSL certificate that is used.

If all of those are blocked, then yes, you'll have to use ADWS. How you use it from .NET is very different. There is a write-up here: http://samirvaidya.blogspot.com/2012/06/using-active-directory-web-services-in.html

But basically, you create a Service Reference in your project and use it like a web service rather than using DirectoryEntry.