We are using dynamics crm 2015. We have to configure email router. For that as a first step we are trying to set synchronization method as "Server side synchronization or email router" option in the user's crm mailbox. As we have to use email router we are not providing any Server profile. but these settings is not getting saved. We are getting
"ErrorMessage:Microsoft.Crm.CrmException: There should be no profile level error when email server profile is null." event in event viewer.
Please suggest the solution to this issue.