Error while accessing the Report server. An attempt has been made to use a delivery extension that is not registered for this report server while emailing a report from within HEAT.
To resolve this issue please perform the following within the SQL Reporting Services Configuration Manager:
Complete the following procedure:
Populate the Sender Address and SMTP Server fields.Reporting services requires a Simple Mail Transfer Protocol (SMTP) server so it knows how the subscription email is delivered. The Sender Address is the address that the subscription email shows as the address of origin.
Note: The Sender Address must be a valid, recognized e-mail address.
Click Apply. You should see a green checkmark next to Email Settings on the left menu, as displayed in the following screen shot:
The green checkmark indicates that the e-mail settings have been updated correctly. Close the Reporting Services Configuration Manager.