[FIXED] SMTP Error: 535 5.7.8 Authentication credentials invalid

Issue

I am using jango smtp setting in my project.

Below is my code:

funcation sendmail()
{

$this->Email->smtpOptions = array(

  'timeout' => '30',

  'port' => '25', 

  'host' => 'relay.jangosmtp.net',

  'username' => 'xxxx',

  'password' => '1234567'

);
}

sendmail function gives the following error:

SMTP Error: 535 5.7.8 Authentication credentials invalid

What may be the reason?

Solution

This is basically because credentials is not correct !!

May be this will help you !!

535 Authentication failed. Restarting authentication process.

If a SMTP client authenticates but the username or password is incorrect, or the account is disabled, hMailServer sends this error message to the client.

http://support.qualityunit.com/156325-Email-is-not-sent-because-of-failed-authentication

SMTP error 535 authentication failed in roundcube

SMTP Error (435): Authentication failed

If you face SMTP error 535 Authentication Failed while sending an email from round cube, then you can check the following things.

[root@server1 ~]# vi /usr/local/cpanel/base/3rdparty/roundcube/config/main.inc.php

and changed

$rcmail_config['smtp_user'] = ‘%u’;
to
$rcmail_config['smtp_user'] = ”;

Answered By - Javascript Coder