Email Hostname Certificate Mismatch Causing sidekiq Queue Overload, Severe Site Instability

Product Support Self-hosting
15

@Geoffrey_Challen how did you fix it?

Today I have update my forum to 2.9.0.beta4 (c99a6b10fb) and now I have the same error, discourse cannot send emails:
SSL_connect returned=1 errno=0 state=error: certificate verify failed (Hostname mismatch)

I have not changed the configuration of the VPS and email!

My app.yml:

  DISCOURSE_SMTP_ADDRESS: smtp.mydomain.info
  DISCOURSE_SMTP_PORT: 25
  DISCOURSE_SMTP_USER_NAME: info@mydomain.info
  DISCOURSE_SMTP_PASSWORD: "mypassword"
  DISCOURSE_SMTP_ENABLE_START_TLS: false           # (optional, default true)
  DISCOURSE_SMTP_DOMAIN: mydomain.info             # (required by some providers)
  #DISCOURSE_NOTIFICATION_EMAIL: noreply@discourse.example.com    # (address to send notifications from)

Tried and nothing changes …

Please now i can’t send emails and i can’t use TLS, what can i do?