On Sat, Apr 16, 2016 at 12:28 PM, Tom H <tomh0665(a)gmail.com> wrote:
On Sat, Apr 16, 2016 at 6:46 PM, Greg Woods <woods(a)ucar.edu>
> On Fri, Apr 15, 2016 at 10:56 PM, Tim <ignored_mailbox(a)yahoo.com.au> wrote:
>> Chris Murphy <lists(a)colorremedies.com>:
>>> FYI, gmail puts your emails in spam for the following reason: Why is
>>> this message in Spam? It has a from address in yahoo.com.au but has
>>> failed yahoo.com.au's required tests for authentication.
> This is, unfortunately, a well-known issue between Google and Yahoo.
> We're on Google at work so I get to deal with this on a semi-regular
> There is something called DMARC (you can Google for that term, the
> first few hits are directly relevant). Without going into all the
> details, suffice it to say that Google believes Yahoo has DMARC in
> place, but they're doing it wrong. This results in mail from Yahoo
> coming from servers that Google thinks it shouldn't be coming from, so
> it gets rejected, flagged as spam, etc.
> I haven't researched it thoroughly enough to figure out who's right
> and who's wrong here, but the bottom line is that it is hard to
> receive mail from Yahoo users on Gmail.
You must be on the right track, but here must be more to it than this.
Yahoo mail that's sent directly to my address is OK but Yahoo mail
that's sent via a mailing list is flagged as spam.
Short version as I understand it: yahoo's addition of dmarc=fail is a
request to consider any email not sent by a yahoo mail server as spam,
and Google is one of the few to honor that request.