解决azkaban使用腾讯企业邮箱发邮件失败问题

1、问题：azkaban配置好腾讯的企业邮箱作为邮件发送者，但是zakaban的web后台直接报错误，连接超时：

javax.mail.MessagingException: Exception reading response;
13051-  nested exception is:
13052-	java.net.SocketTimeoutException: Read timed out
13053:	at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2210)
13054:	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1950)
13055:	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:642)
13056-	at javax.mail.Service.connect(Service.java:295)
13057-	at azkaban.utils.JavaxMailSender.connect(JavaxMailSender.java:34)
13058-	at azkaban.utils.EmailMessage.connectToSMTPServer(EmailMessage.java:220)
13059-	at azkaban.utils.EmailMessage.retryConnectToSMTPServer(EmailMessage.java:230)
13060-	at azkaban.utils.EmailMessage.sendEmail(EmailMessage.java:213)
13061-	at azkaban.utils.Emailer.sendEmail(Emailer.java:242)

因为腾讯的企业邮箱是用smtps协议，也就是ssl ，端口是465

2、查看源码：

azkaban mail.smtp.starttls.enable 只支持tls认证。

3、需要在以下文件加入代码
azkaban-common/src/main/java/azkaban/utils/EmailMessage.java中
在sendEmail()方法里props的配置代码下加入以下几行代码:

import java.security.Security;

Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
props.setProperty("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.socketFactory.port", "465");

效果如下图：