# No email settings, only "Arguments -i"

**URL:** <https://meta.discourse.org/t/no-email-settings-only-arguments-i/57933>\
**Category:** Product Support\
**Created:** [February 25, 2017, 1:36am UTC](https://meta.discourse.org/t/no-email-settings-only-arguments-i/57933 "2017-02-25T01:36:57Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![grodeska](https://avatars.discourse-cdn.com/v4/letter/g/7feea3/32.png) [@grodeska](https://meta.discourse.org/u/grodeska)\
**Post date:** [February 25, 2017, 5:05pm UTC](https://meta.discourse.org/t/no-email-settings-only-arguments-i/57933/3 "2017-02-25T17:05:20Z")

</div>

Thanks, Joshua. Here’s a link to the forum: [http://caldata.net](http://caldata.net)

In answer to your questions:

- Yes, ./launcher rebuild after all app.yml changes
- No errors in logs but browser console is reporting “Failed to load resource: the server responded with a status of 502 (Bad Gateway)”. However, this seems to be an intermittent error. Saw it once this morning and have not seen it again.
- app.yml is valid and pasted below (FYI, I had to remove all links since I’m not allowed to post more than two URLs as a new user…)

* * *

```plaintext
## this is the all-in-one, standalone Discourse Docker container template
##
## After making changes to this file, you MUST rebuild
## /var/discourse/launcher rebuild app
##
## BE *VERY* CAREFUL WHEN EDITING!
## YAML FILES ARE SUPER SUPER SENSITIVE TO MISTAKES IN WHITESPACE OR ALIGNMENT!
## visit http://www.yamllint.com/ to validate this file as needed

templates:
  - "templates/postgres.template.yml"
  - "templates/redis.template.yml"
  - "templates/web.template.yml"
  - "templates/web.ratelimited.template.yml"
## Uncomment these two lines if you wish to add Lets Encrypt (https)
  #- "templates/web.ssl.template.yml"
  #- "templates/web.letsencrypt.ssl.template.yml"

## which TCP/IP ports should this container expose?
expose:
  - "80:80" # http
  - "443:443" # https

params:
  db_default_text_search_config: "pg_catalog.english"

  ## Set db_shared_buffers to a max of 25% of the total memory.
  ## will be set automatically by bootstrap based on detected RAM, or you can o$
  db_shared_buffers: "256MB"

  ## can improve sorting performance, but adds memory usage per-connection
  #db_work_mem: "40MB"

  ## Which Git revision should this container use? (default: tests-passed)
  #version: tests-passed

env:
  LANG: en_US.UTF-8
  # DISCOURSE_DEFAULT_LOCALE: en

  ## How many concurrent web requests are supported? Depends on memory and CPU $
  ## will be set automatically by bootstrap based on detected CPUs, or you can $
  UNICORN_WORKERS: 4

  ## TODO: The domain name this Discourse instance will respond to
  DISCOURSE_HOSTNAME: caldata.net

  ## Uncomment if you want the container to be started with the same
  ## hostname (-h option) as specified above (default "$hostname-$config")
  #DOCKER_USE_HOSTNAME: true

  ## TODO: List of comma delimited emails that will be made admin and developer
  ## on initial signup example 'user1@example.com,user2@example.com'
  DISCOURSE_DEVELOPER_EMAILS: 'lawrence@civicmakers.com'

  ## TODO: The SMTP mail server used to validate new accounts and send notifica$
  DISCOURSE_SMTP_ADDRESS: smtp.mailgun.org
  DISCOURSE_SMTP_PORT: 587
  DISCOURSE_SMTP_USER_NAME: postmaster@caldata.net
  DISCOURSE_SMTP_PASSWORD: XXXXXXX
  DISCOURSE_SMTP_ENABLE_START_TLS: false # (optional, default true)

  ## If you added the Lets Encrypt template, uncomment below to get a free SSL $
  #LETSENCRYPT_ACCOUNT_EMAIL: me@example.com

  ## The CDN address for this Discourse instance (configured to pull)
  #DISCOURSE_CDN_URL: [REMOVED]

## The Docker container is stateless; all data is stored in /shared
volumes:
  - volume:
      host: /var/discourse/shared/standalone
      guest: /shared
  - volume:
      host: /var/discourse/shared/standalone/log/var-log
      guest: /var/log

## Plugins go here
env:
  SEGMENT_IO_KEY: XXXXXXX

hooks:
  after_code:
    - exec:
        cd: $home/plugins
        cmd:
          - git clone [REMOVED]
          - git clone [REMOVED]

## Any custom commands to run after building
run:
  - exec: echo "Beginning of custom commands"
  ## If you want to set the 'From' email address for your first registration, u$
  ## After getting the first signup email, re-comment the line. It only needs t$
  #- exec: rails r "SiteSetting.notification_email='info@unconfigured.discourse$
  - exec: echo "End of custom commands"

```

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_[View the full topic](https://meta.discourse.org/t/no-email-settings-only-arguments-i/57933)._