javax.mail.MessagingException:无法连接到SMTP主机:email-smtp.us-east-1.amazonaws.com，端口:25； [英] javax.mail.MessagingException: Could not connect to SMTP host: email-smtp.us-east-1.amazonaws.com, port: 25;
问题描述
公共无效的emailTest(){
public void emailTest() {
Properties properties=new Properties();
properties.put("mail.smtp.host", "email-smtp.us-east-1.amazonaws.com");
properties.put("mail.smtp.port", 587);
properties.put("mail.debug", "true");
try{
Session session=Session.getInstance(properties);
Message msg=new MimeMessage(session);
msg.setFrom(new InternetAddress("test@gmail.com", "Test"));
msg.setRecipient(RecipientType.TO, new InternetAddress("test@gmail.com", "Test"));
msg.setSubject("Test Subject");
msg.setText("Test Mail");
msg.saveChanges();
Transport transport=session.getTransport("smtp");
transport.connect("username","password");
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
}catch(Exception e){
e.printStackTrace();
}
}
POM:com.sun.mail javax.mail 1.5.2已提供
POM : com.sun.mail javax.mail 1.5.2 provided
调试:JavaMail版本1.4ea
DEBUG: JavaMail version 1.4ea
调试:java.io.FileNotFoundException:/usr/java/jdk1.8.0_144/jre/lib/javamail.providers(无此类文件或目录)
DEBUG: java.io.FileNotFoundException: /usr/java/jdk1.8.0_144/jre/lib/javamail.providers (No such file or directory)
调试:！anyLoaded
DEBUG: !anyLoaded
调试:未加载资源:/META-INF/javamail.providers
DEBUG: not loading resource: /META-INF/javamail.providers
调试:已成功加载资源:/META-INF/javamail.default.providers
DEBUG: successfully loaded resource: /META-INF/javamail.default.providers
调试:已加载的提供程序表
DEBUG: Tables of loaded providers
调试:按类名称列出的提供程序:{com.sun.mail.smtp.SMTPSSLTransport = javax.mail.Provider [TRANSPORT，smtps，com.sun.mail.smtp.SMTPSSLTransport，Sun Microsystems，Inc]，com. sun.mail.smtp.SMTPTransport = javax.mail.Provider [TRANSPORT，smtp，com.sun.mail.smtp.SMTPTransport，Sun Microsystems，Inc]，com.sun.mail.imap.IMAPSSLStore = javax.mail.Provider [ STORE，imaps，com.sun.mail.imap.IMAPSSLStore，Sun Microsystems，Inc]，com.sun.mail.pop3.POP3SSLStore = javax.mail.Provider [STORE，pop3s，com.sun.mail.pop3.POP3SSLStore， Sun Microsystems，Inc]，com.sun.mail.imap.IMAPStore = javax.mail.Provider [STORE，imap，com.sun.mail.imap.IMAPStore，Sun Microsystems，Inc]，com.sun.mail.pop3. POP3Store = javax.mail.Provider [STORE，pop3，com.sun.mail.pop3.POP3Store，Sun Microsystems，Inc]]
DEBUG: Providers Listed By Class Name: {com.sun.mail.smtp.SMTPSSLTransport=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems, Inc], com.sun.mail.smtp.SMTPTransport=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc], com.sun.mail.imap.IMAPSSLStore=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsystems, Inc], com.sun.mail.pop3.POP3SSLStore=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun Microsystems, Inc], com.sun.mail.imap.IMAPStore=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc], com.sun.mail.pop3.POP3Store=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]}
调试:按协议列出的提供程序:{imaps = javax.mail.Provider [STORE，imaps，com.sun.mail.imap.IMAPSSLStore，Sun Microsystems，Inc]，imap = javax.mail.Provider [STORE，imap ，com.sun.mail.imap.IMAPStore，Sun Microsystems，Inc]，smtps = javax.mail.Provider [TRANSPORT，smtps，com.sun.mail.smtp.SMTPSSLTransport，Sun Microsystems，Inc]，pop3 = javax.mail .Provider [STORE，pop3，com.sun.mail.pop3.POP3Store，Sun Microsystems，Inc]，pop3s = javax.mail.Provider [STORE，pop3s，com.sun.mail.pop3.POP3SSLStore，Sun Microsystems，Inc] ，smtp = javax.mail.Provider [TRANSPORT，smtp，com.sun.mail.smtp.SMTPTransport，Sun Microsystems，Inc]]
DEBUG: Providers Listed By Protocol: {imaps=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsystems, Inc], imap=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc], smtps=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems, Inc], pop3=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc], pop3s=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun Microsystems, Inc], smtp=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]}
调试:已成功加载资源:/META-INF/javamail.default.address.map
DEBUG: successfully loaded resource: /META-INF/javamail.default.address.map
调试:！anyLoaded
DEBUG: !anyLoaded
调试:未加载资源:/META-INF/javamail.address.map
DEBUG: not loading resource: /META-INF/javamail.address.map
调试:java.io.FileNotFoundException:/usr/java/jdk1.8.0_144/jre/lib/javamail.address.map(无此类文件或目录)
DEBUG: java.io.FileNotFoundException: /usr/java/jdk1.8.0_144/jre/lib/javamail.address.map (No such file or directory)
调试:getProvider()返回javax.mail.Provider [TRANSPORT，smtp，com.sun.mail.smtp.SMTPTransport，Sun Microsystems，Inc]
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
调试SMTP:useEhlo为true，useAuth为false
DEBUG SMTP: useEhlo true, useAuth false
调试SMTP:尝试连接到主机"email-smtp.us-east-1.amazonaws.com"，端口25，isSSL为假
DEBUG SMTP: trying to connect to host "email-smtp.us-east-1.amazonaws.com", port 25, isSSL false
推荐答案
您使用的是JavaMail的较旧版本；请尽可能进行更新.
You're using an ancient version of JavaMail; please update if possible.
如果您正在AWS中运行JavaMail程序，请注意AWS 关于如何使用JavaMail和可以使用的SMTP主机有限制 连接到.有关详细信息，请查阅其文档. (对不起 没有链接.)
If you're running your JavaMail program within AWS, note that AWS has restrictions on how you use JavaMail and what SMTP host you can connect to. Consult their documentation for details. (Sorry, I don't have the link.)
如果您在AWS之外运行，请参阅JavaMail FAQ，以获取提示 调试连接问题.您很可能在防火墙后面，阻止您直接连接.
If you're running outside of AWS, see the JavaMail FAQ for tips on debugging connection problems. Most likely you're behind a firewall that's preventing you from connecting directly.
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