Distributed Checksum Clearinghouse
= Distributed Checksum Clearinghouse
{wiki=Distributed_Checksum_Clearinghouse}
The Distributed Checksum Clearinghouse (DCC) is a system designed to help detect and prevent unsolicited bulk email (spam) by using checksums to identify and verify the content of messages. It is a collaborative filtering system that allows email servers to efficiently share information about known spam messages.