dcc-client 1.2.74-2 (i386 binary) in ubuntu dapper

Distributed Checksum Clearinghouse - client programs
 This is the DCC client that send checksums to the DCC servers.
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 The DCC or Distributed Checksum Clearinghouse is a system of thousands of
 clients and more than 175 servers collecting and counting checksums related
 to several tens of million mail messages per day. The counts can be used by
 SMTP servers and mail user agents to detect and reject or filter spam or
 unsolicited bulk mail. DCC servers exchange or "flood" common checksums.
 The checksums include values that are constant across common variations in
 bulk messages, including "personalizations."
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 Homepage: http://www.dcc-servers.net/dcc/