How to bypass the certificate error on yandex when sending a letter on Rails?

Question

Ruby on Rails

The second approach to sending emails from a Rails application. The first ended in failure six months ago.
smtp, yandex...
config/environments.rb:
config.action_mailer.raise_delivery_errors = true
This allowed to display error messages about sending emails to the browser

ActionMailer::Base.smtp_settings = {
    :enable_starttls_auto => true,
    address:"smtp.yandex.ru",
    port: 587,
    domain: "127.0.0.1",
    authentication: "plain",
    user_name: "[email protected]",
    password: "неверный пароль"
}

535 5.7.8 Error: authentication failed: Invalid user or password!

It intelligibly answers that the password is incorrect
. We give the correct password:

ActionMailer::Base.smtp_settings = {
    :enable_starttls_auto => true,
    address:"smtp.yandex.ru",
    port: 587,
    domain: "127.0.0.1",
    authentication: "plain",
    user_name: "[email protected]",
    password: "верный пароль"
}

554 5.7.1 Message rejected under suspicion of SPAM

He sees the letter, thinks it's spam
. Maybe it's because of TLS. We try to play with the parameters:
config/initializers/mail.rb:

ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
    :enable_starttls_auto => false,
    :tls => false,
    address:"smtp.yandex.ru",
    port: 587,
    domain: "127.0.0.1",
    authentication: "plain",
    user_name: "[email protected]",
    password: "верный пароль"
}

530 5.7.7 Email sending without SSL/TLS encryption is not allowed. Please see: help.yandex.ru/mail/mail-clients/ssl.xml

Without TLS does not want to communicate at all
config/initializers/mail.rb:

ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
    :enable_starttls_auto => false,
    :tls => true,
    address:"smtp.yandex.ru",
    port: 587,
    domain: "127.0.0.1",
    authentication: "plain",
    user_name: "[email protected]",
    password: "верный пароль"
}

or:

ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
    :enable_starttls_auto => true,
    :tls => true,
    address:"smtp.yandex.ru",
    port: 587,
    domain: "127.0.0.1",
    authentication: "plain",
    user_name: "[email protected]",
    password: "верный пароль"
}

SSL_connect returned=1 errno=0 state=SSLv2/v3 read server hello A: unknown protocol

Then I tried to read and do as it is written here: https://gist.github.com/fnichol/867550.
All the same.
I thought that perhaps the mailbox itself needs to be configured in some way. No:
Tried Mozilla Tundrabird - it works well. Those. with mail as such - everything is in order.
But people succeed, for example, Renat Ibragimov: vk.com/topic-31022447_30379827
What to do? Who made it?
As I was writing this post, I figured it out myself:

ActionMailer::Base.smtp_settings = {
    :enable_starttls_auto => true,
    # :openssl_verify_mode => 'none',
    # :tls => true,
    address:"smtp.yandex.ru",
    port: 587,
    domain: "127.0.0.1:3000",
    authentication: "plain",
    user_name: "[email protected]",
    password: "верный пароль"
}

The letter finally arrived.
It was necessary to register the port!
Decided to post anyway. Maybe someone will come in handy)

Answer 1

ActionMailer::Base.smtp_settings = {
:enable_starttls_auto => true,
address:"smtp.yandex.ru",
port: 587,
domain: "127.0.0.1:3000",
authentication: "plain",
user_name: "[email protected]",
password: "верный пароль"
}