About rules

NoSpamProxy applies rules that you can configure individually when processing emails. These rules are modular in structure. You can create your own rules and modify existing rules by selecting the desired filters from the available filters for each individual rule. Within each rule you can weight and configure them as you wish using a multiplier.

You can also specify that rules apply only to certain IP addresses or recipients, for example, only to senders with a certain TLD (Top Level Domain) or to IP addresses from a certain subnet.

TIP: After reinstalling NoSpamProxy, a set of Default rules can be created after installing the licence. These enable the gateway to start functioning as quickly as possible with minimal administration effort. Nevertheless, you should check these rules and adapt them to your needs if necessary.

DSNs and rules

NOTE: Delivery Service Notifications (DSNs) are processed by the set of rules in NoSpamProxy Server. This includes all actions that take effect after the content filter. For example, a DKIM signature can be applied, which makes it possible to trace the system from which the respective DSN was sent.