DNSWL

DNSWL (DNS-based Whitelist) is a type of DNS-based service used primarily to identify and manage lists of trusted email senders. It allows email servers to quickly check whether an incoming email sender is on a whitelist, which helps reduce the chances of spam and email spoofing. Here’s how it generally works: 1. **Whitelisting**: Legitimate email senders can be added to a DNSWL, which is maintained by a third party or a specific organization.