SMTP fail with Handshake Failure

[daflyinbed]

part of my config:

SMTP_HOST_ADDR=smtp.exmail.qq.com
SMTP_HOST_PORT=465 
SMTP_HOST_SSL_ENABLED=true 

logs:

Request: POST /password/request-reset
** (exit) an exception was raised:
    ** (Bamboo.SMTPAdapter.SMTPError) There was a problem sending the email through SMTP.
The error is :retries_exceeded
More detail below:
{:network_failure, 'smtp.exmail.qq.com', {:error, {:tls_alert, {:handshake_failure, 'TLS client: In state hello received SERVER ALERT: Fatal - Handshake Failure\n '}}}}
        (bamboo_smtp 2.1.0) lib/bamboo/adapters/smtp_adapter.ex:96: Bamboo.SMTPAdapter.handle_response/1
        (bamboo 1.5.0) lib/bamboo/mailer.ex:161: Bamboo.Mailer.deliver_now/4
        (plausible 0.0.1) lib/plausible_web/controllers/auth_controller.ex:107: PlausibleWeb.AuthController.password_reset_request/2
        (plausible 0.0.1) lib/plausible_web/controllers/auth_controller.ex:1: PlausibleWeb.AuthController.action/2
        (plausible 0.0.1) lib/plausible_web/controllers/auth_controller.ex:1: PlausibleWeb.AuthController.phoenix_controller_pipeline/2
        (phoenix 1.4.17) lib/phoenix/router.ex:288: Phoenix.Router.__call__/2
        (plausible 0.0.1) lib/plug/error_handler.ex:65: PlausibleWeb.Router.call/2
        (plausible 0.0.1) lib/plausible_web/endpoint.ex:1: PlausibleWeb.Endpoint.plug_builder_call/2

Do you have any ideas on how I can fix this? thanks