Have you configured your smtp host and port correctly? If there is authentication enabled then you have set the appropriate global setting alert.smtp.useAuth etc.
Regards, Anshul -----Original Message----- From: zcsu [mailto:szc...@hotmail.com] Sent: Thursday, March 27, 2014 11:20 AM To: dev@cloudstack.apache.org Subject: Alert Email must be SSL? Hi I configured Alert Email in Global Setting, but i don't receive any alert, I find ERROR info in management-server.log as below, 2014-03-27 13:31:45,687 ERROR [cloud.alert.AlertManagerImpl] (Email-Alerts-Sender-1:null) Failed to send email alert javax.mail.MessagingException: Exception reading response (javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?) CloudStack 4.2 +CentOS 6.4 [Question] How to correctly Alert Email? Anybody answer me, thank a million.