Get user's Exchange server and email address in .NET

Question

H​i. I would like to know the address of my user's Exchange server (assuming she's in a typical Windows office network). This is in a C# application.

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I already have the user's email address, I found it at System.DirectoryServices.AccountManagement.UserPrincipal.Current.EmailAddress, after referencing System.DirectoryServices.AccountManagement

Answer 1

I use this for my Exchange client application.

1. Install Exchange Web Services Managed API
2. Change your C# project's Properties/Application changed the target framework to '.NET Framework 4' not '.NET 4 Client Profile'
3. Reference C:\Program Files\Microsoft\Exchange\Web Services\1.1\Microsoft.Exchange.WebServices.dll

Now code:

var exchange = new ExchangeService();
exchange.AutodiscoverUrl(from);
var server = exchange.Url.Host;
Console.WriteLine(server);

Here's the MSDN documentation. but note it's for the unreleased version 1.2 of the API. I can't locate the documentation for version 1.1

Answer 2

You're looking for the AD attribute called homeMDB: http://msdn.microsoft.com/en-us/library/ms980583(v=exchg.65).aspx

I don't think there is a nice .NET wrapper for this attribute, so you'll need to use a lower-level LDAP API to get it.

Note that with later versions of Exchange (i.e. 2010) you can connect to any CAS role and Exchange will figure out the routing.

Answer 3

Have you looked into using autodiscover? http://technet.microsoft.com/en-us/library/bb124251.aspx