WebsitePanel error – Unable to create email alias in SmarterMail – Could not check whether mail alias exists

You may receive an error “Could not check whether mail alias exists” while creating email alias from WebsitePanel. The following is the complete error message: Page URL: http://IP:9001/Default.aspx?pid=SpaceMailForwardings&mid=86&ctl=edit_item&SpaceID=50 Logged User: myuser Work on Behalf: myuser Hosting Space: 50 Stack Trace: