On 11/16/21 00:26, 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.
Huh! Thanks, sorry for the noise I hadn't caught that. Somehow exim seems confused, it does the DNS
queries and they return the right RDNS, but then the Receive line is wrong...
