> From: Gary Mills > It's partly an issue of `invisible content'. Users never see all of the > MIME and HTML goo in an e-mail message. Some form of checksumming > could ignore this as well, and perhaps it already does.
the truly invisible MIME and HTML goo is ignored by the main, FUZ2 checksum. > That way, > completely empty messages could be given special treatment. The trouble is that the messages are not completely empty but contain a little text that the recipient presumably wants to see or is to be forced to be seen by free mail providers and other advertisers. After you ignore random looking strings of digits and letters and other cybercrud from a return receipt, each is identical to all others and so has the same checksum. Nominally empty messages from free mail providers have advertising crud that is the same as zillions of other copies. > Alternatively, is there something in the invisible portion of these > troublesome messages that could be used to identify them and exclude > them from DCC rejection? You can whitelist on any SMTP header that is constant for a class of messages. > Otherwise, we would need some automated procedure to detect these > messages and whitelist them by their conventional checksums. There is John Levine's semi-automatic list of checksums of empty messages. The script /var/dcc/libexec/fetch-testmsg-whitelist can be run from cron to fetch http://www.iecc.com/dcc-testmsg-whitelist.txt and/or other lists. Vernon Schryver [EMAIL PROTECTED] _______________________________________________ DCC mailing list [email protected] http://www.rhyolite.com/mailman/listinfo/dcc
