[Mailman-Users] Yahoo Groups' From munging and X-Original-From

[Mark Sapiro]

On 05/25/2014 11:35 PM, Mark Rousell wrote:
> On 26/05/2014 07:24, Stephen J. Turnbull wrote:
>> John Levine writes:
>>
>>  > This is one of the most annoying things about Yahoo and AOL's misuse
>>  > of DMARC -- they're practically forcing people to use hacks to show
>>  > unauthenticated fake From: lines.
>>
>> Not only that, they're doing it themselves. :-(
> 
> To be fair, they are only including X-Original-From in their mail lists.
> No one actually parses it yet as far as I know.


They (Yahoo) are also including the original From: display name and
email address in the display name of their list's munged From:. Given
that some (notably mainstream Microsoft) email clients only show the
display name as From:, this seems to me to totally defeat the intent of
DMARC.

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan