question: is Fastmail compatible with caddy-security's messaging?

[tonytamps]

Hi, I am trying to setup user registration using Fastmail as the messaging provider for a local identity store.

My messaging config looks like this -

security {
    credentials fastmail-smtp-credentials {
        username {env.SMTP_USERNAME}
        password {env.SMTP_PASSWORD}
    }

    messaging email provider fastmail-smtp-server {
        address smtp.fastmail.com:465
        protocol smtp
        sender me@example.com "Example"
        credentials fastmail-smtp-credentials
    }
    # ...snip...
}

Which matches Fastmail's docs - https://www.fastmail.help/hc/en-us/articles/1500000279921-IMAP-POP-and-SMTP#01H8Q4KWEZ2JK8YS0FP85FM0H7

but when I register a user I get the following messages -

{
  "level": "debug",
  "ts": 1754185964.7924397,
  "logger": "security",
  "msg": "Created registration cache entry",
  "session_id": "a4OaSkM7bS4kz8IC11EGb6TGAjGOsSnCeUzR4XT5R3",
  "request_id": "1c1ebf45-184b-4869-a998-02fb0a6f422f",
  "registration_id": "N6i9AoQP9mtT85aSed5HktA17qZXcSWUhA8lUOIezw7yLgJM9wp5mCibHf4fQ6KlVWjNL8UJ1oIhYXlJovTRh1APQpZzp"
}

{
  "level": "warn",
  "ts": 1754186024.8779721,
  "logger": "security",
  "msg": "Failed to send notification",
  "session_id": "a4OaSkM7bS4kz8IC11EGb6TGAjGOsSnCeUzR4XT5R3",
  "request_id": "1c1ebf45-184b-4869-a998-02fb0a6f422f",
  "registration_id": "N6i9AoQP9mtT85aSed5HktA17qZXcSWUhA8lUOIezw7yLgJM9wp5mCibHf4fQ6KlVWjNL8UJ1oIhYXlJovTRh1APQpZzp",
  "registration_type": "registration_confirmation",
  "error": "notification request via \"fastmail-smtp-server\" email provider failed: messaging provider does not support AUTH extension"
}

This prevents me from registering new users and managing existing ones. I can't find much information regarding messaging configuration and haven't dug into the underlying code yet, but before I do I wanted to ask if you can see any reason Fastmail wouldn't be compatible with your package?

Let me know if you could use any further information.

Thanks

[greenpau]

@tonytamps , i haven’t looked into email based registration in a while. Pleasecuse dev docs in this repo to setup dev build, add extra logging and debugging to figure out why it is not working.

[tonytamps]

I've enabled debug logging in Caddy and it didn't reveal anything. I assume you're suggesting I add extra logs and compile the package to debug it?

[greenpau]

Yes, compile and debug.