> For the complete documentation index, see [llms.txt](https://docs.chamilo.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chamilo.org/1.11.x-pt_br/manual-del-administrador/apendice/preguntas_frecuentes.md).
# Preguntas frecuentes
## Enviar e-mails desde la plataforma no funciona
Bajo Windows, se requiere configurar el archivo *chamilo/app/config/mail.conf.php* para usar un servidor SMTP. Es un archivo fácil de entender. Si utiliza un servidor SMTP con autentificación, configurar `smtp_auth` a `1`, y definir un usuario y una contraseña. Si utiliza un servidor SMTP abierto, asignar `smtp_auth` a `0`.
Bajo GNU/Linux, puede optar por utilizar un servidor SMTP de forma semejante a Windows. Para configurar un servidor de correo local bajo Ubuntu puede seguir la documentación del blog de BeezNest:
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