The playbook can configure the [ma1sd](https://github.com/ma1uta/ma1sd) Identity Server for you.
ma1sd, being an Identity Server, is not strictly needed. It is only used for 3PIDs (3rd party identifiers like E-mail and phone numbers) and some [enhanced features](https://github.com/ma1uta/ma1sd/#features).
**Note**: enabling ma1sd, means that the `openid` API endpoints will be exposed on the Matrix Federation port (usually `8448`), even if [federation](configuring-playbook-federation.md) is disabled. It's something to be aware of, especially in terms of firewall whitelisting (make sure port `8448` is accessible).
To ensure maximum discovery, you can make your identity server also forward lookups to the central matrix.org Identity server (at the cost of potentially leaking all your contacts information).
Enabling this is discouraged and you'd better [learn more](https://github.com/ma1uta/ma1sd/blob/master/docs/features/identity.md#lookups) before proceeding.
If you'd like to change the default email templates used by ma1sd, take a look at the `matrix_ma1sd_threepid_medium_email_custom_` variables (in the `roles/custom/matrix-ma1sd/defaults/main.yml` file.
To make the ma1sd Identity Server enable its federation features, set up an SRV record that looks like this:
- Name: `_matrix-identity._tcp` (use this text as-is)
- Content: `10 0 443 matrix.example.com` (replace `example.com` with your own)
See [ma1sd's documentation](https://github.com/ma1uta/ma1sd/wiki/mxisd-and-your-privacy#choices-are-never-easy) for information on the privacy implications of setting up this SRV record.
**Note**: This `_matrix-identity._tcp` SRV record for the identity server is different from the `_matrix._tcp` that can be used for Synapse delegation. See [howto-server-delegation.md](howto-server-delegation.md) for more information about delegation.
To use the [Registration](https://github.com/ma1uta/ma1sd/blob/master/docs/features/registration.md) feature of ma1sd, you can make use of the following variables:
-`matrix_synapse_enable_registration_captcha` - to validate registering users using reCAPTCHA, as described in the [enabling reCAPTCHA](configuring_captcha.md) documentation.
- variables prefixed with `matrix_ma1sd_container_labels_` (e.g. `matrix_ma1sd_container_labels_matrix_client_3pid_registration_enabled`) - to configure the Traefik reverse-proxy to capture and send registration requests to ma1sd (instead of Synapse), so it can apply its additional functionality
-`matrix_ma1sd_configuration_extension_yaml` - to configure ma1sd as required. See the [Registration feature's docs](https://github.com/ma1uta/ma1sd/blob/master/docs/features/registration.md) for inspiration. Also see the [Additional features](#additional-features) section below to learn more about how to use `matrix_ma1sd_configuration_extension_yaml`.
**Note**: For this to work, either the homeserver needs to [federate](configuring-playbook-federation.md) or the `openid` APIs need to exposed on the federation port. When federation is disabled and ma1sd is enabled, we automatically expose the `openid` APIs (only!) on the federation port. Make sure the federation port (usually `https://matrix.example.com:8448`) is whitelisted in your firewall (even if you don't actually use/need federation).
[Authentication](https://github.com/ma1uta/ma1sd/blob/master/docs/features/authentication.md) provides the possibility to use your own [Identity Stores](https://github.com/ma1uta/ma1sd/blob/master/docs/stores/README.md) (for example LDAP) to authenticate users on your Homeserver. The following configuration can be used to authenticate against an LDAP server:
What this playbook configures for your is some bare minimum Identity Server functionality, so that you won't need to rely on external 3rd party services.
To use a more custom configuration, you can define a `matrix_ma1sd_configuration_extension_yaml` string variable and put your configuration in it. To learn more about how to do this, refer to the information about `matrix_ma1sd_configuration_extension_yaml` in the [default variables file](../roles/custom/matrix-ma1sd/defaults/main.yml) of the ma1sd component.
If your use case requires mobile verification, it is quite simple to integrate ma1sd with [Twilio](https://www.twilio.com/), an online telephony services gateway. Their prices are reasonable for low-volume projects and integration can be done with the following configuration:
If you want to open registration for any domain, you have to setup the allowed domains with ma1sd's `blacklist` and `whitelist`. The default behavior when neither the `blacklist`, nor the `whitelist` match, is to allow registration. Beware: you can't block toplevel domains (aka `.xy`) because the internal architecture of ma1sd doesn't allow that.
If email address validation emails sent by ma1sd are not reaching you, you should look into [Adjusting email-sending settings](configuring-playbook-email.md).
