On Tue, 16 Nov 2021, Bill Cole wrote:
On 2021-11-15 at 20:06:22 UTC-0500 (Mon, 15 Nov 2021 20:06:22 -0500)
Matt Corallo <sa...@mattcorallo.com>
is rumored to have said:
Full headers follow, but it seems the shopify detection in the above isn't
quite correct;
Return-path:
<bounces+11006833-f9b2-vmstfpodc=mattcorallo....@mailer.shopifyemail.com>
Envelope-to: vmstfp...@mattcorallo.com
Delivery-date: Mon, 15 Nov 2021 21:10:55 +0000
Received: from o13.mailer.shopify.com ([149.72.221.62])
by mail.as397444.net with esmtps TLS1.3 id 1mmjFb-0034Ki-02
(envelope-from
<bounces+11006833-f9b2-vmstfpodc=mattcorallo....@mailer.shopifyemail.com>)
for vmstfp...@mattcorallo.com; Mon, 15 Nov 2021 21:10:54 +0000
The lack of any name inside the parentheses before the bracketed IP in that
Received header implies that mail.as397444.net could not get a verifiable
rDNS name for that relay.
In short, SA trusts your MTA's indication that this may not really be a
shopify relay.
Even shorter: It's DNS. It's ALWAYS DNS.
[...]
0.8 RDNS_NONE Delivered to internal network by a host with
no rDNS
2.0 HTML_FONT_TINY_NORDNS Font too small to read, no rDNS
2.5 SHOPIFY_IMG_NOT_RCVD_SFY Shopify hosted image but message not
from Shopify
0.0 NORDNS_LOW_CONTRAST No rDNS + hidden text
X-Spam-Score: 6.3
That's 5.3 out of 6.3 caused by the inability of mail.as397444.net to get a
verifiable rDNS name for 149.72.221.62 at delivery time.
It's ALWAYS DNS.
...then again, nothing can be done to fix the rule...
Complain to Shopify that their lack of rDNS is causing their mail to be
considered spam.
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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