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