According to Vsevolod Stakhov via mailop <[email protected]>: W>* meta hash is based on SMTP envelope from, all sorted SMTP recipients, >and masked sender IP >* data hash is based on the message body (up to max_data_len), subject, >all sorted SMTP recipients, and MIME From address > >So if meta hash will change in your scenario, data hash will remain the >same, efficiently allowing to bypass greylisting from distinct /24 >source IPs.
You might think so, but I ran into some senders that recreated the message on each try so the hashes changed. That's another reason I gave up on greylisting. R's, John -- Regards, John Levine, [email protected], Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
