Distributed Checksum Clearinghouse (DCC) is a system of clients and servers that collect and count checksums related to mail messages. The counts can be used by SMTP servers and mail user agents to detect and reject bulk mail. DCC servers can exchange common checksums. The checksums include values that are "fuzzy", or constant across common variations in bulk messages.
|Tags||Communications Email Filters|
|Licenses||Free but restricted|
|Operating Systems||POSIX Windows Mac OS X Unix Linux|
Release Notes: This release fixes the default Linux run levels and start-dccifd.
Release Notes: This release adds partial support for FreeBSD on ARM processors.
Release Notes: This release fixes several modest bugs and updates the copy of the SpamAssassin DCC.pm plugin.
Release Notes: Decodes HTML xx character references in URLs. Converts UTF-8 domain names to Punycode before checking DNS blacklists.
Release Notes: Support for DNS whitelists. An example using dnswl.org is in the sample homedir/dcc_conf file.