What protocol used by ExchangeClient class

I’ve a question regarding Aspose.Email (.net):
Out exchange server is hosted by external provider (Intermedia).
Currently all our tries to connect to a mailbox using the ExchangeClient class fails with 403 or 404 (depending what paramters we try to use).
Can you tell me what protocol does this class uses exactly to connect to the Exchange Server, so I will be able to check it with the Exchange support. maybe it is blocked or something…

Thanks.

Hi,

Thank you for writing to Aspose Support team.

ExchangeClient class uses the WebDav protocol for connecting to Exchange servers (2003 and 2007). If your company hosts Exchange Web Service for connecting to Exchange Server (2010 and above), you may also consider using the IEWSClient of the API. Please refer to our documentation article, Connecting to Exchange Server , for further information in this regard.