# Setting up Postmoogle (optional)

**Note**: email bridging can also happen via the [email2matrix](configuring-playbook-email2matrix.md) bridge supported by the playbook.

The playbook can install and configure [Postmoogle](https://gitlab.com/etke.cc/postmoogle) for you.

It's a bot/bridge you can use to forward emails to Matrix rooms. 
Postmoogle runs an email server through SMTP and allaws you to create mailboxes to the domain you define in the DNS settings.

See the project's [documentation](https://gitlab.com/etke.cc/postmoogle) to learn what it does and why it might be useful to you.

## Prerequisites

### Ports

Open the following ports to your server (without it you will not recive email, but you can still send):
  - `25/tcp`: SMTP
  - `587/tcp`: TLS-encrypted SMTP

You can change the above default ports through the following variables in the playbook:

```yaml
# on-host ports
matrix_bot_postmoogle_smtp_host_bind_port: '25'
matrix_bot_postmoogle_submission_host_bind_port: '587'
```


### Adjusting the playbook configuration

Add the following configuration to your `inventory/host_vars/matrix.DOMAIN/vars.yml` file:

```yaml
matrix_bot_postmoogle_enabled: true

# Uncomment and adjust this part if you'd like to use a username different than the default
# matrix_bot_postmoogle_login: postmoogle

# Generate a strong password here. Consider generating it with `pwgen -s 64 1`
matrix_bot_postmoogle_password: PASSWORD_FOR_THE_BOT
```

Add an admin to Postmoogle with:
```yaml
matrix_bot_postmoogle_admins:
  - '@yourAdminAccount:domain.com'
```

### DNS
You will also need to add several DNS records so that postmoogle can send emails.
See [Configuring DNS](configuring-dns.md).


## Installing

After configuring the playbook, run the [installation](installing.md) command again:

```sh
ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,ensure-matrix-users-created,start
```

**Notes**:

- the `ensure-matrix-users-created` playbook tag makes the playbook automatically create the bot's user account

- if you change the bot password (`matrix_bot_postmoogle_password` in your `vars.yml` file) subsequently, the bot user's credentials on the homeserver won't be updated automatically. If you'd like to change the bot user's password, use a tool like [synapse-admin](configuring-playbook-synapse-admin.md) to change it, and then update `matrix_bot_postmoogle_password` to let the bot know its new password


## Usage

To use the bot, invite the `@postmoogle:DOMAIN` into a room you want to use as a mailbox.

Then send `!pm mailbox NAME` to expose this Matrix room as an inbox with the email address `NAME@matrix.domain`. Emails sent to that email address will be forwarded to the room.

Send `!pm help` to the room to see the bot's help menu for additional commands.

You can also refer to the upstream [documentation](https://gitlab.com/etke.cc/postmoogle).

### Debug/Logs
In case you need to debug declare:

```yaml
matrix_bot_postmoogle_loglevel: 'DEBUG'
```

And access it through `journalctl -fu matrix-bot-postmoogle`