f-d-m <[email protected]> wrote: > On Tuesday, March 5, 2019 at 2:58:31 PM UTC+1, Greg Troxel wrote: > >> Also, the problem is likely that yahoo is rewriting the sender's > address, >> and putting something else in the From: field. You could try > asking them >> to stop :-) More likely to be successful would be to ask the > group to move >> to a mail provider that doesn't do this... > > > This is not Yahoo's fault. > > Now it's time to read and understand SPF, DKIM and DMARC. > ... > > Mailing list software such as Yahoo Groups alter the message (inclusion of a > [tag] in the subject; addition of a footer) so the DKIM signature becomes > invalid as the message is tampered with. > > The unique solution, which has been adopted by Yahoo, is to rewrite the > sender address, discard the original sender, and set [email protected] as > the sender. The original sender may or may not be shown in the text part > describing the sender address.
In other words: this is Yahoo’s fault. -- You received this message because you are subscribed to the Google Groups "K-9 Mail" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
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