The Hub Transport server role and the IIS Simple Mail Transfer Protocol (SMTP) service are both installed on server '{0}'. ...

The Hub Transport server role and the IIS Simple Mail Transfer Protocol (SMTP) service are both installed on server '{0}'. Only one of these is needed for supporting SMTP. It's recommended that the IIS SMTP Service be removed. Click on the link 'get help fixing this issue' in the actions pane located on the right side of the screen for assistance.