Mailer Authentification required

Hey guys, I’m designing a website and i need to send email to a customer.

But when i use Mailer.deliver_later/1 or deliver_now/1 i receive an error.
I don’t know where is the cause of this error.

My config.exs:

config :shopTest, ShopTest.Mailer,
  adapter: Bamboo.SMTPAdapter,
  server: "",
  port: 587,
  username: "****",
  password: "*******",
  tls: :if_available,
  ssl: false,
  retries: 1

and my module Email:

defmodule Email do
  use Bamboo.Phoenix, view: ShopTest.EmailView

  def welcome_text_email(email_address) do
    |> to(email_address)
    |> from("********.com")
    |> subject("Welcome!")
    |> text_body("Welcome to MyApp!")

and my mailer.ex

defmodule ShopTest.Mailer do
  use Bamboo.Mailer, otp_app: :shopTest

`Thank you for your help guys!

Heya, can you post the error?

@muelthe yes sorry ,

[error] Task #PID<0.418.0> started from #PID<0.415.0> terminating
** (Bamboo.SMTPAdapter.SMTPError) There was a problem sending the email through SMTP.

The error is :no_more_hosts

More detail below:

{:permanent_failure, "", "530-5.7.0 Authentication Required. Learn more at\r\n530 5.7.0 m7sm10456280wms.0 - gsmtp\r\n"}

    (bamboo_smtp 1.2.1) lib/bamboo/adapters/smtp_adapter.ex:74: Bamboo.SMTPAdapter.handle_response/1
    (elixir 1.11.3) lib/task/supervised.ex:90: Task.Supervised.invoke_mfa/2
    (stdlib 3.8) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Function: #Function<0.19346564/0 in Bamboo.TaskSupervisorStrategy.deliver_later/3>
    Args: []

It’s sending but looks like it’s being rejected by the relay service (smtp status 570) for security reasons. I’ve never used the gmail relay, but there might be a policy that requires a certain configuration e.g. the use of SSL

I found a recent’ish article here that goes into a bit more detail about using their service: How to Use the Gmail SMTP Server to Send Emails for Free