Re: What I've been wondering about the DMARC problem

["John Levine" <[e-mail]>]

>> The mailman fix is worse than the disease. I think the .INVALID fix is
>> much better, because Reply-all will still work.
>
>>From the latest DMARC draft, section 8:
>
>"If the RFC5322.From domain does not exist in the DNS, Mail Receivers
>SHOULD direct the receiving SMTP server to reject the message."

As far as I can tell, that bit of poor advice hasn't been implemented.


>So if a receiver that is implementing DMARC is faithful to the draft,
>that won't work very well (nobody has gotten a TLD allocation for
>.invalid, I hope?)

See RFC 2606.

R's,
John

PS: I did a few experiments, and putting two addresses on the From:
line works remarkably well to avoid inappropriate policy failures,
e.g.

 From: Marissa <[e-mail]>, [e-mail]
 Subject: whatever
 ...