On 4/15/14 1:38 PM, Brian E Carpenter wrote:
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."
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?)
-Jim