authelia/docs/content/integration/openid-connect/clients/mailcow/index.md

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title	description	summary	date	draft	images	weight	toc	aliases	support	seo
Mailcow	Integrating Mailcow with the Authelia OpenID Connect 1.0 Provider.		2025-04-26T18:35:57+10:00	false		620	true	/integration/openid-connect/mailcow/	level versions integration community true true	title description canonical noindex Mailcow | OpenID Connect 1.0 | Integration Step-by-step guide to configuring Mailcow with OpenID Connect 1.0 for secure SSO. Enhance your login flow using Authelia’s modern identity management. false

Tested Versions

• Authelia
  • v4.39.24
• Mailcow
  • v2025-03

{{% oidc-common %}}

Assumptions

This example makes the following assumptions:

• Application Root URL: https://mailcow.{{< sitevar name="domain" nojs="example.com" >}}/
• Authelia Root URL: https://{{< sitevar name="subdomain-authelia" nojs="auth" >}}.{{< sitevar name="domain" nojs="example.com" >}}/
• Client ID: mailcow
• Client Secret: insecure_secret

Some of the values presented in this guide can automatically be replaced with documentation variables.

{{< sitevar-preferences >}}

Configuration

Authelia

The following YAML configuration is an example Authelia client configuration for use with Mailcow which will operate with the application example:

identity_providers:
  oidc:
    ## The other portions of the mandatory OpenID Connect 1.0 configuration go here.
    ## See: https://www.authelia.com/c/oidc
    clients:
      - client_id: 'mailcow'
        client_name: 'Mailcow'
        client_secret: '$pbkdf2-sha512$310000$c8p78n7pUMln0jzvd4aK4Q$JNRBzwAo0ek5qKn50cFzzvE9RXV88h1wJn5KGiHrD0YKtZaR/nCb2CJPOsKaPK0hjf.9yHxzQGZziziccp6Yng'  # The digest of 'insecure_secret'.
        public: false
        authorization_policy: 'two_factor'
        require_pkce: false
        pkce_challenge_method: ''
        redirect_uris:
          - 'https://mailcow.{{< sitevar name="domain" nojs="example.com" >}}'
        scopes:
          - 'openid'
          - 'profile'
          - 'email'
        response_types:
          - 'code'
        grant_types:
          - 'authorization_code'
        access_token_signed_response_alg: 'none'
        userinfo_signed_response_alg: 'none'
        token_endpoint_auth_method: 'client_secret_post'

Application

To configure Mailcow there is one method, using the Web GUI.

Web GUI

To configure Mailcow to utilize Authelia as an OpenID Connect 1.0 Provider, use the following instructions:

1. Login to Mailcow.
2. Navigate to System.
3. Navigate to Configuration.
4. Navigate to Access.
5. Navigate to Identity Provider.
6. Configure the following options:
   • Identity Provider: Generic-OIDC
   • Authorization Endpoint: https://{{< sitevar name="subdomain-authelia" nojs="auth" >}}.{{< sitevar name="domain" nojs="example.com" >}}/api/oidc/authorization
   • Token Endpoint: https://{{< sitevar name="subdomain-authelia" nojs="auth" >}}.{{< sitevar name="domain" nojs="example.com" >}}/api/oidc/token
   • User Info Endpoint: https://{{< sitevar name="subdomain-authelia" nojs="auth" >}}.{{< sitevar name="domain" nojs="example.com" >}}/api/oidc/userinfo
   • Client ID: mailcow
   • Client Secret: insecure_secret
   • Redirect URL: https://mailcow.{{< sitevar name="domain" nojs="example.com" >}}
   • Client Scopes: openid profile email
7. Press Save at the bottom.

See Also

• Mailcow Generic-OIDC Guide