Assistance Required: SMTP Authentication Error in BTP CAP Application

[rahuljain257]

Greetings,

I've encountered an SMTP authentication error while attempting to send an email through a BTP CAP Application. The error message is as follows:

Uncaught Error: Invalid login: 535-5.7.8 Username and Password not accepted. For more information, go to
535 5.7.8  https://support.google.com/mail/?p=BadCredentials w10-20020a0cf70a000000b006a0dbe40533sm110635qvn.135 - gsmtp
    at SMTPConnection._formatError (/home/user/projects/SDModule/node_modules/nodemailer/lib/smtp-connection/index.js:798:19)
    at SMTPConnection._actionAUTHComplete (/home/user/projects/SDModule/node_modules/nodemailer/lib/smtp-connection/index.js:1577:34)
    at SMTPConnection.<anonymous> (/home/user/projects/SDModule/node_modules/nodemailer/lib/smtp-connection/index.js:554:26)
    at SMTPConnection._processResponse (/home/user/projects/SDModule/node_modules/nodemailer/lib/smtp-connection/index.js:982:20)
    at SMTPConnection._onData (/home/user/projects/SDModule/node_modules/nodemailer/lib/smtp-connection/index.js:763:14)
    at SMTPConnection._onSocketData (/home/user/projects/SDModule/node_modules/nodemailer/lib/smtp-connection/index.js:195:44)
    at TLSSocket.emit (node:events:513:28)
    at addChunk (node:internal/streams/readable:324:12)
    at readableAddChunk (node:internal/streams/readable:297:9)
    at Readable.push (node:internal/streams/readable:234:10) {
  code: 'EAUTH',
  response: '535-5.7.8 Username and Password not accepted. For more information, go to\n' +
    '535 5.7.8  https://support.google.com/mail/?p=BadCredentials w10-20020a0cf70a000000b006a0dbe40533sm110635qvn.135 - gsmtp',
  responseCode: 535,
  command: 'AUTH PLAIN'

I have attached the destination configuration and a snippet of the sample code from the CAP application for reference. Any insights or suggestions to resolve this issue would be greatly appreciated.

Sample code which I wrote to send the application -

srv.on("getNorthwindProducts", async(req) => {
        try
        {
            const mailConfig = {
              from: 'test@gmail.com',
              to: 'test@gmail.com',
              subject: 'e-mail subject',
              text: 'e-mail text'
            };
            sendMail({ destinationName: 'hotmail' }, [mailConfig]);
            return data;
        }
        catch(err) {
            console.log(err);
        }
    });

Thank you in advance for your help!

Regards

Rahul Jain

[MakotoS]

I guess this is not a problem on SAP side but simply Gmail does not accept basic auth.

I guess the discussion here is relevant.
https://stackoverflow.com/questions/75021886/gmail-smtp-send-535-5-7-8-username-and-password-not-acc...

[Sriram2009]

Hi Rahul,

1. Check the Google account user ID and password

2. Check the SAP note for the SMTP error 3228442

Regards

SS