Subscribe2 Notification Email Rejected

In order to save some time, I will just post the rejection message here.

Please note that [email protected] and [email protected] are modified name as I don’t know if it is safe to post real accounts publicly.

Here is the email:

Hi. This is the qmail-send program at server271.com.
I’m afraid I wasn’t able to deliver your message to the following addresses.
This is a permanent error; I’ve given up. Sorry it didn’t work out.

<[email protected]>:
172.253.124.27 failed after I sent the message.
Remote host said: 550-5.7.1 [192.252.145.21 19] Our system has detected that this message is
550-5.7.1 likely suspicious due to the very low reputation of the sending
550-5.7.1 domain. To best protect our users from spam, the message has been
550-5.7.1 blocked. Please visit
550 5.7.1 https://support.google.com/mail/answer/188131 for more information. 4si13802579ybo.204 – gsmtp

— Below this line is a copy of the message.

Return-Path: <[email protected]>
Received: (qmail 20663 invoked by uid 503); 12 Oct 2020 14:51:21 -0000
Received: from unknown (HELO https://www.dsoemarko.us) ([email protected])
by server271.com with ESMTPA; 12 Oct 2020 14:51:21 -0000
Date: Mon, 12 Oct 2020 14:51:16 +0000
To: [email protected]
From: Examine Everything <[email protected]>
Reply-To: Examine Everything <[email protected]>
Subject: [Examine Everything] Please confirm your request
Message-ID: <[email protected]>
X-Mailer: PHPMailer 6.1.6 (https://github.com/PHPMailer/PHPMailer)
Return-Path: <[email protected]>
List-ID: Examine Everything <www.dsoemarko.us>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8

Examine Everything has received a request to subscribe for this email address. To complete your request please click on the link below:

https://www.dsoemarko.us/christian/?s2=1cec6cde949cc9ac64d159503c5e73921673

If you did not request this, please feel free to disregard this notice!

Thank you,
Examine Everything.

Hi @bloggerdave,

Our system has detected that this message is likely suspicious due to the very low reputation of the sending.

Is your site newly created? your site needs to be IP warmup. Warming IP helps domain to reach inbox and Domain warmup is the easiest way to properly perform a warmup and establish the highest delivery rates.

You can learn more about domain warmup from this blog.

hmm… my site is not completely new, but it has been inactive for 3-4 years. Maybe that is the reason. I will look into domain warmup. Thank you for your reply, Ashiquzzaman!

hmm… I have checked the domain warmup blog, but that doesn’t seem to be my problem. I am not sending bulk emails.

What is happening is when a reader send me a subscription request, Subscribe2 sends a email to the reader to ask for confirmation, but even that message gets rejected.

If from the header it doesn’t look like a problem of Subscribe2, I will probably have to find a different forum to ask this question. ??

But if you see something else, please let me know. Thanks!