The EWS API does not allow you to create a Distribution list if you are using Exchange 2007. Creating a ContactGroup is only supported in Exchange 2010.
How do you create a distribution list using C# in an Exchange Public Folder?
The EWS API does not allow you to create a Distribution list if you are using Exchange 2007. Creating a ContactGroup is only supported in Exchange 2010.
How do you create a distribution list using C# in an Exchange Public Folder?