# SMTP Gateway via Docker This is an example setup for a SMTP server that forwards all incoming mails to docspell via `curl`. The docker image contains [exim](https://exim.org) and a sample config file that runs curl against a configurable docspell url. It uses the [integration endpoint](https://docspell.org/docs/webapp/uploading#integration-endpoint) and it expects it to be configured with "http-header" protection. It can be easily adopted to use a different protection method. Please see the [documentation page](https://docspell.org/docs/tools/smtpgateway) for a guide.