I checked Windows Event Logs and it shows like this:
2014-09-30 22:19:26,764 [AlertCheckingThread] ERROR All - Sending the email to my@gmail.com with subject ALARM using SMTP Server smtp.gmail.com failed. Server does not support secure connections. System.Net.Mail.SmtpException: Server does not support secure connections. at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message) at SolarWinds.Orion.Core.Actions.Utility.Smtp.Clients.NativeSmtpClient.Send() at SolarWinds.Orion.Core.MessageActions.ActionEmail.ExecuteActionWithTlsSupport()
But still I receive email when I click test button.. weird.