Send javamail using Office365 - smtp

Question

I'm having trouble configuring the SMTP settings for sending mail using javax.mail (1.4.4) through Office365, so I thought I'd post the properties here for others.

Answer 1

Use Office365 smtp details as below:
private static Properties props;
private static Session session;
static {
props = new Properties();
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.port", "587");
props.put("mail.smtp.host", "m.outlook.com");
props.put("mail.smtp.auth", "true");
session = Session.getInstance(props, new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("office365 email address",
"office365 password");
}
});
}

Answer 2

And with spring-boot, you simply need to add this to your application.properties:
spring.mail.host = smtp.office365.com
spring.mail.username = mathieu.pousse#headquarter.com
spring.mail.password = s3cr3t
spring.mail.port = 587
spring.mail.properties.mail.smtp.auth = true
spring.mail.properties.mail.smtp.starttls.enable = true

Answer 3

A working code example:
Email email = new SimpleEmail();
email.setHostName("smtp.office365.com");
email.setSmtpPort(587);
email.setAuthenticator(new DefaultAuthenticator("a#b.com", "****"));
email.setStartTLSEnabled(true);
try {
email.setFrom("a#b.com");
email.setSubject("Job Failure");
email.setDebug(true);
email.setMsg("This is a test mail ... :-)" );
email.addTo("a#y.com");
email.send();
} catch (EmailException e) {
e.printStackTrace();
}

Answer 4

The only error that I am noticing in your code is the incorrect Host
javaMailProperties.setProperty("mail.smtp.from", "abc#c.com");
javaMailProperties.setProperty("mail.smtp.user", "abc#c.com");
javaMailProperties.setProperty("mail.smtp.password","Password");
javaMailProperties.setProperty("mail.smtp.host", "smtp.office365.com");
javaMailProperties.setProperty("mail.smtp.port", "587");
javaMailProperties.setProperty("mail.smtp.auth", "true");
javaMailProperties.setProperty("mail.smtp.starttls.enable", "true");
Change the host you will be all good.