Using ghost with smtp and no auth

Hi is there any way to configure ghost to use smtp server which doesn’t support auth?

It seems it is trying to use AUTH even though I have no user name and password configured… I am wondering if it is related to Unable so send email without credentials. · Issue #809 · nodemailer/nodemailer · GitHub

with test email I get

Invalid login - 503 #5.3.3 AUTH not available

I am using ghost 3.14.0 self hosted

environment variables: