Vertx Mail Client config

[Prajeesh K P]

Hi All,

I am trying to send E-Mail using vert.x mail client using microsoft exchange. My code is attached below.

public static void main(String[] args) {

    Vertx vertx = Vertx.vertx();
    MailConfig mailConfig = new MailConfig();
    mailConfig.setHostname("smtp.office365.com");
    mailConfig.setPort(587);
    mailConfig.setLogActivity(true);
    mailConfig.setStarttls(StartTLSOptions.REQUIRED);
    mailConfig.setLogin(LoginOption.REQUIRED);
    mailConfig.setUsername("ma...@company.com");
    mailConfig.setPassword("Password");
    mailConfig.setSsl(false);

    MailClient mailClient = MailClient.create(vertx, mailConfig);
    MailMessage message = new MailMessage();
    message.setFrom(mailConfig.getUsername());
    message.setTo("some...@somecompany.com");
    message.setText("This is a Test Mail");

    mailClient.sendMail(message,res->{
       if(res.succeeded()) {
           System.out.println("Mail Sent");
       } else {
           res.cause().printStackTrace();
       }
    });
}

when I running this code I am getting this exception

 WARNING: AUTH LOGIN failed 535 5.7.3 Authentication unsuccessful 

io.vertx.core.impl.NoStackTraceThrowable: Failed to authenticate

and when I add the Auth method I it is saying not valid auth method.

Please help with what I should add as Auth method and also let me know if I am doing something wrong.

Regards

Prajeesh K P 

[Jonad García San Martín]

Hello Prajeesh,

You can try with:

mailConfig.setAuthMethods("PLAIN");

PLAIN

LOGIN

MD5

DIGEST-MD5

CRAM-MD5

GSSAPI

OAUTH10A

OAUTHBEARER

XOAUTH2

If none of those works fine, I found instructions to configure your application to connect with exchange via SMTP using the last one (XOAUTH2) here:

https://docs.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth

You have to register your application and follow a series of steps. I don´t know if vertx mail client support that AUTH METHOD. If don´t you can try to add XOAUTH2 header mannually to the mail, following "AUTHENTICATE XOAUTH2 <base64 string in XOAUTH2 format>" format described in the article.

Greetings.

[Prajeesh K P]

Thanks Jonad Login auth type worked

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