vSMTP rule engine

vSMTP server is built with a runtime also called rule engine. This runtime can execute code provided in our superset of the https://rhai.rs language.

The viridIT scripting language (vsl) is a simple language that allow you to define rules and object to control the traffic on your MTA.

Further details on the official book of vSMTP: https://vsmtp.rs/reference/vSL/vsl.html