On Wed, May 17, 2023 at 05:25:36PM -0700, Brandon Long via mailop wrote: > (...) > > I know some mailing list software does modify messages in order to defeat > the duplicate detection in > Gmail. The duplicate detection requires that the date, "clean" subject and > messageid are identical. > The "clean" subject is one that tries to remove various mailing list > subject prefixes/suffixes and reply markers. > Modifying the messageid of course would break the DKIM signature, but most > mailing list software already does > that. >
Dear Brandon, Thanks for information. It is something i have been curious about for a long time. Sincerely, Byung-Hee _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
