Ошибка сервера 530 smtp authentication is required

SMTP Error 530 Authentication Required is an error user gets while sending emails.

This error occurs when users configure invalid login details, sender IP gets blacklisted, and so on.

At Bobcares, we often get requests to fix SMTP errors as a part of our Server Management Services.

Today, let’s see how our Support Engineers fix this authentication error.

SMTP error 530

SMTP is responsible for sending emails. If an email is not sent, it gives error messages with codes. This helps in easy troubleshooting.

An SMTP error code is of a 3 digit format, with each digit has a specific meaning. One such error that shows up while sending an email is ‘SMTP error 530’.

Usually, this is an authentication problem. The basic reasons for this are invalid login details, blacklisted sender IP and so on.

Let’s discuss how our Support Engineers fix this error for our customers.

How we fix the SMTP error 530?

SMTP errors have clearly defined error codes. But, finding the reasons for some errors are tricky. Our Dedicated Engineers, with expertise over a decade in Email services, are skilful in fixing such SMTP errors for our customers.

Now, let’s see the possible causes and fixes for the authentication error.

1. Authenticate the email client

The most obvious reason for SMTP error 530 is not authenticating the Email client properly. This usually happens when the user is unaware of the setting of a new Email client.

For instance, email client authentication in Microsoft Outlook is as follows:

• First select File>> Account Settings.
• Click the Email tab and select the email address.
• Next, click on the More Settings.
• Now, Internet E-mail Settings appear.
• Click on the tab Outgoing Server and enter the details.
• Finally, click the checkbox ‘My outgoing server (SMTP) requires authentication’.

Our Support Engineers provide a detailed guide about authentication for each Email client.

2. Invalid Login credentials

Similarly, invalid or incorrect login details result in this SMTP error. Some customers enter invalid email address and email clients show error 530.

In such situations, our Support Engineers ask the customers to double-check login credentials. We handhold the customers to configure their mail clients without errors.

We also make sure that the recipient’s email address is valid.

3. Blacklisted Sender IP

Another reason that can cause SMTP error is blacklisting of IP by recipient server. The sender IP address may have got blacklisted somehow. If the sender uses this server to send mails, then it shows error 530.

In this case, we check if the recipient server has blocked the sender IP. So, we request them to unban or whitelist it.

4. ISP blocking port

The default SMTP port is 25. But if the customer’s ISP blocks access to this SMTP port, error 530 can occur. This is usually done as a measure to avoid spamming.

A workaround we do is to configure SMTP to use alternate port and enable this port in the mail client settings to send mail via Outlook, Thunderbird etc.

[Still having trouble in fixing SMTP errors? – We’ll fix it.]

Conclusion

In short, SMTP Error 530 is an authentication error. Usually, this error indicates an unauthenticated email client. Other reasons for this error are blacklisting of sender IP or invalid email address. Today, we saw how our Support Engineers fix this error for our customers.

var google_conversion_label = «owonCMyG5nEQ0aD71QM»;

I’ve been trying to send e-mail from the following PHP script running on my localhost, with G-mail as my SMTP relay host.

<?php
// The message
$message = "Line 1rnLine 2rnLine 3";

$message = wordwrap($message, 70, "rn");

$headers = 'From: <my-email>@gmail.com' . "rn" .
    'Reply-To: <my-email>@gmail.com' . "rn" .
    'X-Mailer: PHP/' . phpversion();

// Send Mail
if (true==mail('<other email>@gmail.com', 'My Subject', $message, $headers, '-f<other email>@gmail.com'))
{
    echo "E-mail successfully sent.";
}
else
{
    echo "E-mail failed.";
}
?>

Although the mail function returns ‘TRUE’, no e-mail actually gets delivered, and I keep getting the following error when I look at the mail log:

Also, in looking at the mail.log file, the following errors were recorded:

Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: maps_find: smtp_sasl_passwd: smtp.gmail.com: not found
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: maps_find: smtp_sasl_passwd: smtp.gmail.com:587: not found
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: smtp_sasl_passwd_lookup: no auth info found (sender=`rrodriguez6@unknownf81edfd84850.att.net', host=`smtp.gmail.com')
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: > smtp.gmail.com[173.194.219.108]:587: MAIL FROM:<rrodriguez6@unknownf81edfd84850.att.net> SIZE=389
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: > smtp.gmail.com[173.194.219.108]:587: RCPT TO:<rlrodriguez.rivera@gmail.com>
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: > smtp.gmail.com[173.194.219.108]:587: DATA
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: vstream_fflush_some: fd 15 flush 108
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: vstream_buf_get_ready: fd 15 got 133
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: < smtp.gmail.com[173.194.219.108]:587: 530-5.5.1 Authentication Required. Learn more at
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: < smtp.gmail.com[173.194.219.108]:587: 530 5.5.1  https://support.google.com/mail/answer/14257 j2sm2579221ywj.12 - gsmtp
Aug 17 22:00:03 unknownf81edfd84850 postfix/smtp[1714]: connect to subsystem private/bounce

Is it possible that postfix cannot read my sasl_passwd.db file?

Below is the content of my sasl_passwd file:

smtp.gmail.com:587 <my gmail account>:�<my gmail password>

Also, I have the following settings in my main.cf file:

#Gmail SMTP
relayhost = smtp.gmail.com:587
# Enable SASL authentication in the Postfix SMTP client.
smtp_sasl_auth_enable=yes
smtp_sasl_password_maps=hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options=
# Enable Transport Layer Security (TLS), i.e. SSL.
smtp_use_tls=yes
smtp_tls_security_level=encrypt
tls_random_source=dev:/dev/urandom
smtp_tls_CAfile = /etc/postfix/ssl/cacert.pem
debug_peer_list=smtp.gmail.com
debug_peer_level=3

One thing I did notice is that when I run postmap to create the sasl_passwd.db file, I get the following warning:

postmap: warning: sasl_passwd, line 0: expected format: key whitespace value

In this article, we will focus on the Mailer error: The following From address failed: info@abc.com : MAIL not accepted from server, 530,5.7.0 Authentication Required.

This is a common error that occurs while sending email through Gmail Link: https://mail.google.com/ account and while using PHPMailer Class link: https://github.com/PHPMailer/PHPMailer.

Now, let us look at the causes and solutions to this error.

What causes this error?

Let us look at the reasons for this error.

Cause 1: Incorrect SMTP Setting for Email

This error may arise due to incorrect SMTP settings.

Solution

Thus, check your SMTP settings first.

$mail->isSMTP();     // Set mailer to use SMTP
$mail->Host = 'smtp.gmail.com';  // Specify main and backup SMTP servers
$mail->SMTPAuth = true;     // Enable SMTP authentication
$mail->Username = 'info@abc.com';  // SMTP username
$mail->Password = 'password';  // SMTP password
$mail->SMTPSecure = 'tls';     // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587;           // TCP port to connect to

Important: You have to check the SMTP and PORT settings.

$mail->Port = 587; & $mail->SMTPSecure = 'tls';

Doing this might solve the issue.

Cause 2: Less Secure App Accessed is not Enabled

Less secure apps are usually 3rd party applications that send your credentials directly to Gmail. Here, an authorization mechanism such as OAuth isn’t used. If the “Less secure app access” is disabled in Gmail, you’ll face this error.

To avoid this, you need to enable “Less secure app access” in your Gmail account settings.

Steps to enable less secure app

i) Login to your Gmail account

ii) Click on the top right Profile iconand then click on Account

iii) In the Account Window that opens up, click on the Security button on the left navigation column

iv) Scroll down and search for the option “Less secure app access”. If you have previously enabled the “2 Step Verification” option, then the “Less secure app access” will not be available. Therefore, you have to disable the “2 Step Verification” option

v) Now, scroll up to the “Signing in to Google” section. Then, click on the “2-Step Verification”button

vi) A 2-Step Verificationwindow will pop up. Here, click on the “TURN OFF” option to disable this feature

Now, go back to the previous page and you’ll see the “Less secure app access” has appeared.

vii) You can enable the “Less secure app access” option now. For this, click on “Turn on access (not recommended)”

viii) This will take you to a page called Less secure app access. Here, click on the toggle button beside “Allow less secure apps access” asshown in the image. This will enable less secure applications.

Or, click on the link given below and turn off the toggle button –
https://myaccount.google.com/u/1/lesssecureapps

Conclusion

If you have followed the steps mentioned above, you can easily send and receive emails on your Gmail account. In case you are still facing the Mailer error: The following From address failed: info@abc.com : MAIL not accepted from server,530,5.7.0 Authentication Required error, then feel free to write about it in the comment section below.

Hi All,

While sending the message to the certain domain, I am getting the error message as below, I have pasted the entire header, Please help me out on this. «The following organization rejected your message: mail.zehndev.com. «

Vijay Singh

 (vijay.singh@edgenmurray.com )
An error occurred while trying to deliver this message to the recipient’s e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.

The following organization rejected your message: mail.zehndev.com.

 _____  

Sent by Microsoft Exchange Server 2007

Diagnostic information for administrators:

Generating server: HMEL-NDA-EDGE01.HMEL.INT

joan.cordeiro@edgenmurray.com
mail.zehndev.com #530 SMTP authentication is required. ##

leena.bakshi@edgenmurray.com
mail.zehndev.com #530 SMTP authentication is required. ##

naveed.ahmed@edgenmurray.com
mail.zehndev.com #530 SMTP authentication is required. ##

teena.belani@edgenmurray.com
mail.zehndev.com #530 SMTP authentication is required. ##

vijay.singh@edgenmurray.com
mail.zehndev.com #530 SMTP authentication is required. ##

Original message headers:

Received: from HMEL-NDA-HTC01.hmel.int (10.60.0.148) by
  HMEL-NDA-EDGE01.HMEL.INT (192.168.13.51) with Microsoft SMTP Server (TLS) id
  8.1.393.1; Mon, 28 Dec 2009 11:05:34 +0530
Received: from HMEL-NDA-VMBX01.hmel.int ([169.254.1.195]) by
  HMEL-NDA-HTC01.hmel.int ([10.60.0.148]) with mapi; Mon, 28 Dec 2009 11:03:47
  +0530

Thanks,

That is slightly odd. I recommend turning up debug output as more authentication details are shown at SMTPDebug = 4.

One minor thing — don’t set $this->mail->Mailer = 'smtp'; yourself; you’re already calling $this->mail->isSMTP(); which does that for you.

I recommend you avoid $this->mail->SingleTo = true;; it’s deprecated, and you should be sending messages individually yourself.

**I tried everything, but it still failed. Do you have any way to help me?

My file config Mailer

<?php
namespace AppClasses;
use PHPMailerPHPMailerPHPMailer;

class Mail
{
    protected $mail;

    public function __construct()
    {
        $this->mail = new PHPMailer;
        $this->setUp();
    }

    public function setUp()
    {
        $this->mail->isSMTP();
        $this->SMTPAuth = true;
        $this->mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
        $this->mail->Host = 'smtp.gmail.com';
        $this->mail->Port = 587;

        $environment = getenv('APP_ENV');
        if($environment === 'local'){$this->mail->SMTPDebug = 4;}

        //auth info
        $this->mail->Username = 'cokhimoitruongtinphat@gmail.com';
        $this->mail->Password = 'xxxx';

        $this->mail->isHTML(true);    // Set email format to HTML
 //       $this->mail->SingleTo = true; // set multiple user

        // send info
        $this->mail->setFrom('cokhimoitruongtinphat@gmail.com', 'Mailer');
    }

    public function send($data)
    {
        $this->mail->addAddress($data['to'], $data['name']);
        $this->mail->Subject = $data['subject'];
        $this->mail->Body = make($data['view'], array('data' => $data['body']));
        return $this->mail->send();
    }
}

File Report Error

2020-07-04 08:17:06 Connection: opening to smtp.gmail.com:587, timeout=300, options=array()
2020-07-04 08:17:06 Connection: opened
2020-07-04 08:17:06 SMTP INBOUND: "220 smtp.gmail.com ESMTP u14sm14743789pfk.211 - gsmtp"
2020-07-04 08:17:06 SERVER -> CLIENT: 220 smtp.gmail.com ESMTP u14sm14743789pfk.211 - gsmtp
2020-07-04 08:17:06 CLIENT -> SERVER: EHLO acme.local
2020-07-04 08:17:06 SMTP INBOUND: "250-smtp.gmail.com at your service, [2402:800:6318:62c2:423:6272:60cf:98f9]"
2020-07-04 08:17:06 SMTP INBOUND: "250-SIZE 35882577"
2020-07-04 08:17:06 SMTP INBOUND: "250-8BITMIME"
2020-07-04 08:17:06 SMTP INBOUND: "250-STARTTLS"
2020-07-04 08:17:06 SMTP INBOUND: "250-ENHANCEDSTATUSCODES"
2020-07-04 08:17:06 SMTP INBOUND: "250-PIPELINING"
2020-07-04 08:17:06 SMTP INBOUND: "250-CHUNKING"
2020-07-04 08:17:06 SMTP INBOUND: "250 SMTPUTF8"
2020-07-04 08:17:06 SERVER -> CLIENT: 250-smtp.gmail.com at your service, [2402:800:6318:62c2:423:6272:60cf:98f9]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING250 SMTPUTF8
2020-07-04 08:17:06 CLIENT -> SERVER: STARTTLS
2020-07-04 08:17:06 SMTP INBOUND: "220 2.0.0 Ready to start TLS"
2020-07-04 08:17:06 SERVER -> CLIENT: 220 2.0.0 Ready to start TLS
2020-07-04 08:17:06 CLIENT -> SERVER: EHLO acme.local
2020-07-04 08:17:07 SMTP INBOUND: "250-smtp.gmail.com at your service, [2402:800:6318:62c2:423:6272:60cf:98f9]"
2020-07-04 08:17:07 SMTP INBOUND: "250-SIZE 35882577"
2020-07-04 08:17:07 SMTP INBOUND: "250-8BITMIME"
2020-07-04 08:17:07 SMTP INBOUND: "250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH"
2020-07-04 08:17:07 SMTP INBOUND: "250-ENHANCEDSTATUSCODES"
2020-07-04 08:17:07 SMTP INBOUND: "250-PIPELINING"
2020-07-04 08:17:07 SMTP INBOUND: "250-CHUNKING"
2020-07-04 08:17:07 SMTP INBOUND: "250 SMTPUTF8"
2020-07-04 08:17:07 SERVER -> CLIENT: 250-smtp.gmail.com at your service, [2402:800:6318:62c2:423:6272:60cf:98f9]250-SIZE 35882577250-8BITMIME250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH250-ENHANCEDSTATUSCODES250-PIPELINING250-CHUNKING250 SMTPUTF8
2020-07-04 08:17:07 CLIENT -> SERVER: MAIL FROM:<cokhimoitruongtinphat@gmail.com>
2020-07-04 08:17:07 SMTP INBOUND: "530-5.7.0 Authentication Required. Learn more at"
2020-07-04 08:17:07 SMTP INBOUND: "530 5.7.0 https://support.google.com/mail/?p=WantAuthError u14sm14743789pfk.211 - gsmtp"
2020-07-04 08:17:07 SERVER -> CLIENT: 530-5.7.0 Authentication Required. Learn more at530 5.7.0 https://support.google.com/mail/?p=WantAuthError u14sm14743789pfk.211 - gsmtp
2020-07-04 08:17:07 SMTP ERROR: MAIL FROM command failed: 530-5.7.0 Authentication Required. Learn more at530 5.7.0 https://support.google.com/mail/?p=WantAuthError u14sm14743789pfk.211 - gsmtp
The following From address failed: cokhimoitruongtinphat@gmail.com : MAIL FROM command failed,Authentication Required. Learn more at https://support.google.com/mail/?p=WantAuthError u14sm14743789pfk.211 - gsmtp,530,5.7.0SMTP server error: MAIL FROM command failed Detail: Authentication Required. Learn more at https://support.google.com/mail/?p=WantAuthError u14sm14743789pfk.211 - gsmtp SMTP code: 530 Additional SMTP info: 5.7.0
Email send failed2020-07-04 08:17:07 CLIENT -> SERVER: QUIT
2020-07-04 08:17:07 SMTP INBOUND: "221 2.0.0 closing connection u14sm14743789pfk.211 - gsmtp"
2020-07-04 08:17:07 SERVER -> CLIENT: 221 2.0.0 closing connection u14sm14743789pfk.211 - gsmtp
2020-07-04 08:17:07 Connection: closed