SMTP : disable authentication for postfix

[bernardgut]

Hello

I am running this in a Kubernetes environment which provides a local postfix relay at e.g. mail.mail.svc.cluster.local

Unfortunately I cannot send emails because gotrue tries to use STARTTLS while it should not:

      GOTRUE_JWT_ADMIN_GROUP_NAME:          supabase_admin
      GOTRUE_SMTP_HOST:                     mail.mail.svc.cluster.local
      GOTRUE_SMTP_PORT:                     587
      GOTRUE_SMTP_USER:                     
      GOTRUE_SMTP_PASS:                     <set to the key 'smtpPassword' in secret 'appflowy'>  Optional: false
      GOTRUE_SMTP_ADMIN_EMAIL:              support@HOSTNAME.COM
      GOTRUE_MAILER_AUTOCONFIRM:            false

NOTE: GOTRUE_SMTP_PASS is empty

{"auth_event":{"action":"user_recovery_requested","actor_id":"a0f847a4-9b56-414c-b05e-6e22a96a4777","actor_username":"ME@HOSTNAME.COM","actor_via_sso":false,"log_type":"user"},"component":"api","error":"Error sending magic link email: tls: failed to verify certificate: x509: certificate is valid for localhost, not mail.mail.svc.cluster.local","level":"error","method":"POST","msg":"500: Error sending magic link","path":"/magiclink","referer":"https://HOSTNAME/auth/callback","remote_addr":"ADDR","request_id":"2dfc8f62-3fda-462e-8901-2a8250945a99","time":"2025-07-13T08:10:21Z"}

I am looking for an option to set authentication to disabled (which means to STARTTLS). Like I do for all other apps in this Kubernetes cluster. Any help appreciated