On Fri, Jul 01, 2016 at 05:02:58PM -0500, Michael Catanzaro wrote:
On Fri, 2016-07-01 at 16:19 -0400, Dan Book wrote:
> Nobody is blocking you. But aside from this one instance I went
> digging
> through my spam folder, I do not see your messages, and I suspect
> many
> others do not either. Communication doesn't work if you can't reach
> the
> audience, quite literally in this case. But if you don't care, then
> that's
> all.
> -Grinnz
I checked my spam folder. All of gil's mails have been going there.
There is this helpful message:
"Why is this message in Spam? It has a from address in libero.it but
has failed libero.it's required tests for authentication."
There is documentation for this:
https://support.google.com/mail/answer/1366858
which points to:
https://dmarc.org/overview/
I don't understand email, but I suspect gil's problem has something to
do with that.
So that's rather fast to explain. Libero.it use this SPF record:
$ host -t TXT libero.it
libero.it descriptive text "v=spf1 ip4:212.48.25.128/25 ip4:212.48.14.160/27
include:srs.bis.na.blackberry.com include:srs.bis.eu.blackberry.com
include:srs.bis.ap.blackberry.com include:mail.zendesk.com -all"
basically, if the mail do not come from zendesk or blackberry servers, or from the
ranges 212.48.25.128/25 or 212.48.14.160/27, the provider (libero.it) say
this is a fake mail and a spam (the -all).
A quick look at the headers of mail send by Gil show that indeed, the mail
do not come from any of the servers authorized to send mail
on behalf of libero.it.
Ergo, Gmail tag that as spam, because Libero.it say to do so in explicit
and standard respecting way.
So either libero.it change the SPF record, or Gil start to to use libero.it
SMTP, or use a different email in the 'from' header.
We can't really ask to all providers (ie, more than gmail) who use SPF to not listen
to libero.it constraints, for obvious reasons (like "libero.it is fully
authorized to do what they see fit with their domain" being the first one).
--
Michael Scherer