u/alienus333

Hey guys,

my SMPT won't work and I don't know why, Claude also don't know.

This is my config, I'm using mailbox.org and there an application passwort:

# To see all available options, please visit the docs:
# https://docs.pangolin.net/

gerbil:
    start_port: 51820
    base_endpoint: "pangolin.domain.cloud"

app:
    dashboard_url: "https://pangolin.domain.cloud"
    log_level: "info"
    telemetry:
        anonymous_usage: true

domains:
    domain1:
        base_domain: "domain.cloud"

server:
    secret: "longsecret"
    cors:
        origins: ["https://pangolin.domain.cloud"]
        methods: ["GET", "POST", "PUT", "DELETE", "PATCH"]
        allowed_headers: ["X-CSRF-Token", "Content-Type"]
        credentials: false
    maxmind_db_path: "./config/GeoLite2-Country.mmdb"

email:
  smtp_host: smtp.mailbox.org
  smtp_port: 587
  smtp_user: name@mailbox.org
  smtp_pass: "abcd-abcd-abcd-abcd"
  smtp_secure: false
  no_reply: name@domain.cloud

flags:
    require_email_verification: false
    disable_signup_without_invite: true
    disable_user_create_org: false
    allow_raw_resources: true

2026-05-03T19:09:39+00:00 [error]: Invalid login: 535 5.7.8 Error: authentication failed:
Stack: Error: Invalid login: 535 5.7.8 Error: authentication failed:
    at SMTPConnection._formatError (/app/node_modules/nodemailer/lib/smtp-connection/index.js:887:19)
    at SMTPConnection._actionAUTHComplete (/app/node_modules/nodemailer/lib/smtp-connection/index.js:1695:34)
    at SMTPConnection.<anonymous> (/app/node_modules/nodemailer/lib/smtp-connection/index.js:626:26)
    at SMTPConnection._processResponse (/app/node_modules/nodemailer/lib/smtp-connection/index.js:1072:20)
    at SMTPConnection._onData (/app/node_modules/nodemailer/lib/smtp-connection/index.js:847:14)
    at SMTPConnection._onSocketData (/app/node_modules/nodemailer/lib/smtp-connection/index.js:217:44)
    at TLSSocket.emit (node:events:509:28)
    at addChunk (node:internal/streams/readable:563:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:514:3)
    at Readable.push (node:internal/streams/readable:394:5) {"code":"EAUTH","response":"535 5.7.8 Error: authentication failed: ","responseCode":535,"command":"AUTH PLAIN"}