[ih] Email reliability

[John Levine]

It appears that Jack Haverty via Internet-history <jack at 3kitty.org> said:
>It will likely reduce spam, but also disrupt real email - in particular 
>any email that travels using any mailing list (like this one). 

Uh, where have you been? Mailing lists have been screwed up by DMARC
since Yahoo started over-enforcing it a decade ago.

There's a variety of workarounds for mailing lists ranging from the
effective but not actually existing (that's ARC), or tricky and hard
to implement (per-author rewrites as the IETF and groups.io do) to the
just plain bad (put the list's address on the From line so you can't
tell who's sending mail nor reply reliably.)

Google and Yahoo's upcoming changes will have a lot o effect on badly
run commerical bulk mailers, but the damage to mailing lists was done
ages ago.

R's,
John