diff --git a/server/src/com/cloud/projects/ProjectManagerImpl.java b/server/src/com/cloud/projects/ProjectManagerImpl.java
index b78257a4c3e..946ecd1b02f 100755
--- a/server/src/com/cloud/projects/ProjectManagerImpl.java
+++ b/server/src/com/cloud/projects/ProjectManagerImpl.java
@@ -1126,6 +1126,8 @@ public class ProjectManagerImpl implements ProjectManager, Manager{
                 smtpTrans.connect();
                 smtpTrans.sendMessage(msg, msg.getAllRecipients());
                 smtpTrans.close();
+            } else {
+                throw new CloudRuntimeException("Unable to send email invitation; smtp ses");
             }
         }
     }