CODEWITHSUNDEEP
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love thakker
love thakker

Reputation: 470

SMTP Error: 454 4.7.0 Too many login attempts, please try again later

I have set up SMTP server with gmail account. It was working fine till few days back. When I checked the logs I found below entry in it:

SMTP Error: 454 4.7.0 Too many login attempts, please try again later.

I have restarted SMTP service twice. I have checked the configuration that was set up using this link. Everything is same as we have set up. I have restarted the SMTP server & the machine too.

I have checked for 2 step verification settings. It is not enabled. I have checked for "less secure" apps settings and it is set to Enabled as suggested here.

I have checked apps enabled as suggested here using below link.

https://security.google.com/settings/security/permissions?pli=1

But no apps are added. Can anyone suggest anything that I need to look for? Thanks in advance.

Upvotes: 20

Views: 68775

Answers (7)

Wilhelm Mauch
Wilhelm Mauch

Reputation: 123

It worked for me only when I moved the pool key-value to the top of the object.

    const transporter = nodemailer.createTransport({
      pool: true,
      host: "smtp.gmail.com",
      port: 465,
      secure: true, 
      maxConnections: 11,
      maxMessages: Infinity,
      auth: {
        user: process.env.EMAIL_USER,
        pass: process.env.EMAIL_PASS
      }
    });

Upvotes: 1

hugholousk
hugholousk

Reputation: 169

It may be because the mail's size is greater than the allowed size (25MB).

Upvotes: 1

kds
kds

Reputation: 28665

I had the same issue. When I checked the Mail queue there were many unprocessed mails in the queue. So I deleted the bulk mails and restarted the instance. Once the Mail Queue is cleared then it started to send mails as usual.

Hope this will be useful for anybody to have the above issue.

Upvotes: 2

Diego Cumbicus
Diego Cumbicus

Reputation: 29

The Issue resolved change the password mail server password

Upvotes: 0

Johnson
Johnson

Reputation: 339

It is because you are attempting to create a new smtp connection for each email. You need to use SMTP pool.

Please see:

DELIVERING BULK MAIL

POOLED SMTP

Pooled smtp is mostly useful when you have a large number of messages that you want to send in batches or your provider allows you to only use a small amount of parallel connections.

If you are using Node-mailer:

const transporter = nodemailer.createTransport({
    host: 'smtp.gmail.com',
    port: 465,
    secure: true,
    pool: true, // This is the field you need to add
    auth: {
       user: '[email protected]',
       pass: 'your_password' 
}});

Then, you need to close the pool once you send all the emails.

transporter.close();

Upvotes: 22

Hassan Saeed
Hassan Saeed

Reputation: 7120

please follow the instructions below:

  • Open Gmail from a browser and only sign into the account you're trying to add. Be sure to be signed out of all your other accounts

    Go to this link: https://accounts.google.com/b/0/displayunlockcaptcha and click Continue or confirm.

    Now Test your program it will work fine

Upvotes: 0

love thakker
love thakker

Reputation: 470

The Issue resolved with the TCP port changing to 587 from 25 in Outbound Connections settings in SMTP Server.

Upvotes: 1

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