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37 lines
1.5 KiB
Markdown
37 lines
1.5 KiB
Markdown
# Adjusting email-sending settings (optional)
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By default, this playbook sets up an [Exim](https://www.exim.org/) email server through which all Matrix services send emails.
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The email server would attempt to deliver emails directly to their final destination.
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This may or may not work, depending on your domain configuration (SPF settings, etc.)
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By default, emails are sent from `matrix@<your-domain-name>` (as specified by the `matrix_mailer_sender_address` playbook variable).
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## Firewall settings
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No matter whether you send email directly (the default) or you relay email through another host (see how below), you'll probably need to allow outgoing traffic for TCP ports 25/587 (depending on configuration).
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## Relaying email through another SMTP server
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If you'd like to relay email through another SMTP server, feel free to redefine a few playbook variables.
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Example:
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```yaml
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matrix_mailer_sender_address: "another.sender@example.com"
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matrix_mailer_relay_use: true
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matrix_mailer_relay_host_name: "mail.example.com"
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matrix_mailer_relay_host_port: 587
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matrix_mailer_relay_auth: true
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matrix_mailer_relay_auth_username: "another.sender@example.com"
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matrix_mailer_relay_auth_password: "some-password"
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```
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**Note**: only the secure submission protocol (using `STARTTLS`, usually on port `587`) is supported. **SMTPS** (encrypted SMTP, usually on port `465`) **is not supported**.
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## Troubleshooting
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If you're having trouble with email not being delivered, it may be useful to inspect the mailer logs: `journalctl -f -u matrix-mailer`.
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