[dmarc-discuss] mailing lists, was SPF pass / fail

[John R Levine]

> Do you think it's reasonable to suggest that they enforce DMARC?

Interesting question.  Assuming the lists confirm subscriptions, which is 
close to universal these days, what further benefit would DMARC provide? 
You already know that the subscribers are who they say they are.

If there were an issue of bad guys faking subscriber addresses to sneak 
mail into lists, it might be useful, but I've never seen that.  What I 
have seen is accounts taken over by crooks who then blast mail out to the 
victim's entire address book, which happens to include the lists they 
subscribe to.  Not much DMARC can do there.

Regards,
John Levine, johnl at taugh.com, Taughannock Networks, Trumansburg NY
"I dropped the toothpaste", said Tom, crestfallenly.