This release includes:
- Code refactoring & improvements
- The MBox resolver
- New actions
- vsl.QUARANTINE (store an email in the quarantine queue)
- vsl.LOOKUP_MAIL_FROM (checks if the clients ip resolves to the MAIL FROM command's domain)
- vsl.USE_MBOX (use the mbox protocol for delivery)
- vsl.CONTAINS_RCPT (checks if the parameter is a recipient of the current email)