Sending email to users [Self-hosting]

[MerlijnvdBerg]

Hi,

Problem:

Trying to send emails to users using Resend on a self-hosted instance of Supabase.

Error:

{
  data: null,
  error: AuthRetryableFetchError: {}
      at handleError (./node_modules/@supabase/gotrue-js/dist/main/lib/fetch.js:25:15)
      at _handleRequest (./node_modules/@supabase/gotrue-js/dist/main/lib/fetch.js:72:15)
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
      at async _request (./node_modules/@supabase/gotrue-js/dist/main/lib/fetch.js:56:18)
      at async SupabaseAuthClient.resetPasswordForEmail (./node_modules/@supabase/gotrue-js/dist/main/GoTrueClient.js:1165:20)
      at async file:///root/test/index.js:17:15 {
    __isAuthError: true,
    status: 504
  }
}

Expectation:

It uses Resend to send the user an authentication or password or any email.

After I set up a self-hosted instance of Supabase using docker, I could not send any emails to my users. (I think) I set everything up correctly for resend, but it is hard to tell without documentation. Could someone advise me on my configuration or have any tips for getting this to work?
When I try, I get a timeout error. This is my config, if I need to provide anything else, please let me know.

The part I think I need help with:

## Email auth
ENABLE_EMAIL_SIGNUP=true
ENABLE_EMAIL_AUTOCONFIRM=true
[email protected]
SMTP_HOST=smtp.resend.com
SMTP_PORT=465
SMTP_USER=resend
SMTP_PASS=<MY RESEND API KEY>
SMTP_SENDER_NAME=foo

Thanks in advance!

Full .env file:

############
# Secrets
# YOU MUST CHANGE THESE BEFORE GOING INTO PRODUCTION
############

POSTGRES_PASSWORD=<A top secret 42 char password>
JWT_SECRET=<jwt key>
ANON_KEY=<anon key>
SERVICE_ROLE_KEY=<service role key>
DASHBOARD_USERNAME=<A top secret username>
DASHBOARD_PASSWORD=<A top secret 42 char password>
############
# Database - You can change these to any PostgreSQL database that has logical replication enabled.
############

POSTGRES_HOST=db
POSTGRES_DB=postgres
POSTGRES_PORT=5432
# default user is postgres

############
# API Proxy - Configuration for the Kong Reverse proxy.
############

KONG_HTTP_PORT=8000
KONG_HTTPS_PORT=8443


############
# API - Configuration for PostgREST.
############

PGRST_DB_SCHEMAS=public,storage,graphql_public


############
# Auth - Configuration for the GoTrue authentication server.
############

## General
SITE_URL=http://localhost:3000
ADDITIONAL_REDIRECT_URLS=
JWT_EXPIRY=3600
DISABLE_SIGNUP=false
API_EXTERNAL_URL=http://localhost:8000

## Mailer Config
MAILER_URLPATHS_CONFIRMATION="/auth/v1/verify"
MAILER_URLPATHS_INVITE="/auth/v1/verify"
MAILER_URLPATHS_RECOVERY="/auth/v1/verify"
MAILER_URLPATHS_EMAIL_CHANGE="/auth/v1/verify"

## Email auth
ENABLE_EMAIL_SIGNUP=true
ENABLE_EMAIL_AUTOCONFIRM=true
[email protected]
SMTP_HOST=smtp.resend.com
SMTP_PORT=465
SMTP_USER=resend
SMTP_PASS=<MY RESEND API KEY>
SMTP_SENDER_NAME=foo

## Phone auth
ENABLE_PHONE_SIGNUP=false
ENABLE_PHONE_AUTOCONFIRM=false


############
# Studio - Configuration for the Dashboard
############

STUDIO_DEFAULT_ORGANIZATION=my_organization_name
STUDIO_DEFAULT_PROJECT=Production

STUDIO_PORT=3000
# replace if you intend to use Studio outside of localhost
SUPABASE_PUBLIC_URL=http://localhost:8000

# Enable webp support
IMGPROXY_ENABLE_WEBP_DETECTION=true

############
# Functions - Configuration for Functions
############
# NOTE: VERIFY_JWT applies to all functions. Per-function VERIFY_JWT is not supported yet.
FUNCTIONS_VERIFY_JWT=false

############
# Logs - Configuration for Logflare
# Please refer to https://supabase.com/docs/reference/self-hosting-analytics/introduction
############

LOGFLARE_LOGGER_BACKEND_API_KEY=your-super-secret-and-long-logflare-key

# Change vector.toml sinks to reflect this change
LOGFLARE_API_KEY=your-super-secret-and-long-logflare-key

# Docker socket location - this value will differ depending on your OS
DOCKER_SOCKET_LOCATION=/var/run/docker.sock

# Google Cloud Project details
GOOGLE_PROJECT_ID=GOOGLE_PROJECT_ID
GOOGLE_PROJECT_NUMBER=GOOGLE_PROJECT_NUMBER

[rsatyan]

Hi @MerlijnvdBerg - I have the same issue were you able to resolve it ?

[IoanSolovastru97]

I have experienced the same issue and I've managed to solve it by changing SMTP_PORT from 465 to 587:
SMTP_PORT=587

[wade-liwei]

how's going?

[OmarVector]

Confirmed, changing SMTP_PORT to 587 in .env file solved the problem:)