Hi guys,

       I am new to exchange server. I have been trying to integrate exchange with sharepoint. I have using 2013 exchange and sharepoint.  I have enabled the  sitemailbox app. But when i tried establish the trust and service permission on exchange i got error as " cannot access O auth document".  And "The underlying connection was closed : could not establish trust relationship for ssl/tls secure channel". I have been stucked in this error for two days. Help me to resolve this.

And i am trying to do this for a HTTPS site.