DNS Checksum Query for Email Content Filtering
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Solution Overview
Problem
Current email filtering systems require frequent updates of lists and characteristics to effectively block unwanted electronic content, leading to significant network bandwidth and resource usage.
Innovation Solution
A system that calculates a checksum for electronic content and queries a DNS server to gather information, allowing for efficient identification and management of unwanted content without the need for periodic updates, using a cache to store IP addresses associated with checksums for quick lookup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filtering systems use frequently updated lists and characteristics to effectively block unwanted electronic content, then filtering effectiveness is improved, but network bandwidth usage and resource consumption increase significantly
Solution Approach 1:
The system pre-calculates checksums for electronic content and stores them in a database before filtering is needed. When an email arrives, the system quickly queries the pre-computed checksum database rather than performing complex analysis in real-time, thus achieving effective filtering without continuous resource-intensive updates
Solution Approach 2:
The patent replaces the traditional mechanical approach of periodically downloading and updating large filter databases over the network with a computational approach using checksums. Instead of mechanically transferring and storing large amounts of filter data, the system uses cryptographic checksums to represent content characteristics, dramatically reducing network bandwidth requirements while maintaining filtering effectiveness
2Reliability
If filtering systems stream updates in their entirety at regular intervals, then filtering accuracy is maintained, but network bandwidth and system resources are excessively consumed
Solution Approach 1:
The system extracts only the essential identifying characteristic of electronic content (the checksum) from the full content database. Instead of storing and transmitting complete emails or large filter databases, only the compact checksum values are stored and queried, dramatically reducing data transmission and storage requirements while preserving the ability to accurately identify and filter unwanted content
Data Source
AI summary
A system, method and computer program product are provided. In use, a checksum associated with electronic content is calculated. Further, a domain name service (DNS) server is queried utilizing the checksum. In response to the query, information is received from the DNS server which relates to the electronic content.