535-5.7.8 Username and Password not accepted

Question

I have a contact form and after submitting I am getting a Net::SMTPAuthenticationError 535-5.7.8 Username and Password not accepted

It\'s pointing to th

Answer 1

Goto config/initializers/setup_mail.rb Check whether the configuration there matches the configuration written in the development.rb file.It should look like the following in both files:

config.action_mailer.smtp_settings = {
     :address =>"smtp.gmabirdvision17@gmail.comil.com",
     :port => 587,
     :domain => "gmail.com",
     :user_name => "PPPPPPPP@gmail.com",
     :password => "********",
     :authentication => 'plain',
     :enable_starttls_auto => true,
     :openssl_verify_mode => 'none' 
     } 

This will most certainly solve your problem.

Answer 2

First, You need to use a valid Gmail account with your credentials.

Second, In my app I don't use TLS auto, try without this line:

config.action_mailer.smtp_settings = {
  address:              'smtp.gmail.com',
  port:                 587,
  domain:               'gmail.com',
  user_name:            'YOUR_USERNAME@gmail.com',
  password:             'YOUR_PASSWORD',
  authentication:       'plain'
  # enable_starttls_auto: true
  # ^ ^ remove this option ^ ^
}

---

UPDATE: (See answer below for details) now you need to enable "less secure apps" on your Google Account

https://myaccount.google.com/lesssecureapps?pli=1

Answer 3

If you still cannot solve the problem after you turn on the less secure apps. The other possible reason which might cause this error is you are not using gmail account.

-    : user_name  =>  'example@company.com' ,  # It can not be used since it is not a gmail address 
+    : user_name  =>  'example@gmail.com' ,  # since it's a gmail address

Refer to here.

Also, bear in mind that it might take some times to enable the less secure apps. I have to do it several times (before it works, every time I access the link it will shows that it is off) and wait for a while until it really work.

Answer 4

I had the same problem. Now its working fine after doing below changes.

https://www.google.com/settings/security/lesssecureapps

You should change the "Access for less secure apps" to Enabled (it was enabled, I changed to disabled and than back to enabled). After a while I could send email.

Answer 5

In my case removing 2 factor authentication solves my problem.

Answer 6

Time flies, the way I do without enabling less secured app is making a password for specific app

Step one: enable 2FA

• https://myaccount.google.com/signinoptions/two-step-verification/enroll-welcome

Step two: create an app-specific password

• https://myaccount.google.com/apppasswords

After this, put the sixteen digits password to the settings and reload the app, enjoy!

  config.action_mailer.smtp_settings = {
    ...
    password: 'HERE', # <---
    authentication: 'plain',
    enable_starttls_auto: true
  }