javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;

SendMail

DEBUG: setDebug: JavaMail version 1.4.4

DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]

DEBUG SMTP: useEhlo true, useAuth false

DEBUG SMTP: trying to connect to host "localhost", port 25, isSSL false

javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;

nested exception is:

java.net.ConnectException: Connection refused: connect

at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1934)

at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)

at javax.mail.Service.connect(Service.java:295)

at javax.mail.Service.connect(Service.java:176)

at javax.mail.Service.connect(Service.java:196)

at com.itheima.tfy.util.SendMail.run(SendMail.java:48)

Caused by: java.net.ConnectException: Connection refused: connect

at java.net.PlainSocketImpl.socketConnect(Native Method)

at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)

at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

at java.net.Socket.connect(Socket.java:519)

at java.net.Socket.connect(Socket.java:469)

at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:288)

at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:231)

at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1900)

... 5 more