On 12/11/22 2:46 PM, Michael Deutschmann wrote:
Blind-carbon-copy is already a sign of spam. Long ago, it was because the bad guys were using open relays, and could spam faster by issuing many RCPT TO:s to the relay in one transaction. (I remember being puzzled back then that most of my spam came "To: [email protected]" rather than my address at the time.). In modern times, you still see it from "Nigerian" scammers who seem to be using real webmail sites and copy-pasting huge address lists into a literal Bcc: field.
You'd think that the webmail sites wouldn't like that very much because it strains their resources. But of course there is nothing stopping people from running their own MTA.
Mike _______________________________________________ Ietf-dkim mailing list [email protected] https://www.ietf.org/mailman/listinfo/ietf-dkim
