"Returned Mail" Can I do anything to help prevent?

Hi I am getting emails like this about 3 times a day:

The original message was received at Fri, 27 Jan 2017 21:18:27 +0700
from []

   ----- The following addresses had permanent fatal errors -----
    (reason: 553 See http://spf.pobox.com/why.html?sender=steven%40hildreth.email&ip= (#5.7.1))

   ----- Transcript of session follows -----
... while talking to mail1.hosting.nl.:
<<< 553 See http://spf.pobox.com/why.html?sender=steven%40hildreth.email&ip= (#5.7.1)
550 5.1.1 <github@ozindar.com>... User unknown
<<< 503 RCPT first (#5.5.1)
Reporting-MTA: dns; relay.tric.ru
Arrival-Date: Fri, 27 Jan 2017 21:18:27 +0700

Final-Recipient: RFC822; github@ozindar.com
Action: failed
Status: 5.1.3
Remote-MTA: DNS; mail1.hosting.nl
Diagnostic-Code: SMTP; 553 See http://spf.pobox.com/why.html?sender=steven%40hildreth.email&ip= (#5.7.1)
Last-Attempt-Date: Mon, 30 Jan 2017 17:01:31 +0700
Return-Path: <steven@hildreth.email>
Received: from mail.tric.tomsk.gov.ru ([])
    by relay.tric.ru (8.14.3/8.14.3/Debian-9.4) with ESMTP id v0REIQb9002141
    for <github@ozindar.com>; Fri, 27 Jan 2017 21:18:27 +0700
X-Virus-Scanned: Debian amavisd-new at mail.tric.tomsk.gov.ru
Received: from pqlt
    by mail.tric.tomsk.gov.ru (8.14.3/8.14.3/Debian-9.4) with ESMTP id v0REINcu025895;
    Fri, 27 Jan 2017 21:18:24 +0700
Message-ID: <D12B631102D6F81BC7C28B3C28996F20@pqlt>
Reply-To: "Yen" <AdamBuchbinder@tutanota.com>
From: "Yen" <steven@hildreth.email>
To: <github@ozindar.com>
Subject: question
Date: Fri, 27 Jan 2017 15:18:17 +0100
MIME-Version: 1.0
Content-Type: multipart/mixed;
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.5931
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157

Is there anything I can do to help? Perhaps I dont have something running or configured properly?


Run this command and share the output here:

Ideally in a gist or pastbin link.

The debug message indicates that there is something wrong with your SPF records.

mail1.hosting.nl rejected a message that claimed an envelope sender address of steven@hildreth.email.
mail1.hosting.nl received a message from isrv.tric.ru ( that claimed an envelope sender address of steven@hildreth.email.

However, the domain hildreth.email has declared using SPF that it does not send mail through isrv.tric.ru ( That is why the message was rejected.

Your spf records for hildreth.email indicate that only box.hildreth.email can send email for hildreth.email

However, somehow, you are trying to send email from isrv.tric.ru

Currently, the nameservers for hildreth.email are google name servers, which means MIAB isn’t managing your name servers nor DNS and you have to configure your dos manually.