when the email marketing service Sendinblue sends an email on behalf of my gmail account, gmail shows it to be authenticated w/ DKIM and says it’s
signed-by: sendinblue.com
Question: How can I send an from MiaB with a freemail account in the “From” header that’s still DKIM authenticated?
below is the code i used to send my email from MiaB as a gmail account, the resulting email from my gmail inbox, and a successful delivery from sendinmail with DKIM for comparison
#! /usr/local/bin/python
from smtplib import SMTP_SSL as SMTP
from email.mime.text import MIMEText
SMTPserver = "box.mailpotato.net"
destination = "zsdvzsdv1@gmail.com"
envelope_from = "me@mailpotato.net"
header_from = "stuart.clifford@gmail.com"
USERNAME = "me@mailpotato.net"
PASSWORD = "***"
text_subtype = "plain"
content = "Test Message"
try:
msg = MIMEText(content, text_subtype)
msg["Subject"] = "Sent from Python"
msg["To"] = destination
msg["From"] = header_from
conn = SMTP(SMTPserver)
conn.set_debuglevel(False)
conn.login(USERNAME, PASSWORD)
try:
conn.sendmail(envelope_from, [destination], msg.as_string())
finally:
conn.quit()
except Exception as e:
print(e)
the resulting email sent by ^ code:
Delivered-To: zsdvzsdv1@gmail.com
Received: by 2002:a05:7208:550f:b0:5e:f1af:829 with SMTP id t15csp4069772rbf;
Tue, 20 Dec 2022 14:33:23 -0800 (PST)
X-Google-Smtp-Source: AA0mqf74ckl5QFK3fRcB19IDPdJewX9P4hp4l/mQKbSLSHf4kYJqlvaXEf9lr2jpfNzgs8cw1J9e
X-Received: by 2002:a05:6214:5985:b0:4c6:f789:f82d with SMTP id ll5-20020a056214598500b004c6f789f82dmr74178829qvb.24.1671575603037;
Tue, 20 Dec 2022 14:33:23 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1671575603; cv=none;
d=google.com; s=arc-20160816;
b=zaMAVLgfyNQ3+VyV24rIjsqW2avF8P0Bg5jdkLMhGRM5w+4ht3bIitjghzGOEatNTW
B6g9XOHESlEcNSjODP7xoUj8qAS2PiNX0ifIpXbQ/mIp1LYbKXcDLlpHxXu3RUuerSr4
xvS04Adgw6XjJ79K7YmHoyIsSsjy3O6EyRzJcGMEKU5etXUvTD+wMjp0ksUbkXPl0LSt
nKDsMJ5+YmB7hN/hbAAjCJ9HuLj05QDizc/unIleuLayHfFo2O7jYAguym595zbL4DCe
msh9tpuLmaMGOgPF+PNsbBVqTdIvgXqsPMs/XCz0C+W5R/hQLyZx0cMlwNJZRWj0PLtA
PbIw==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
h=date:message-id:from:to:subject:content-transfer-encoding
:mime-version;
bh=0zm4HdljdW5c73P0NTJGrkEkSwAW+jQMpTe6xSMdk7E=;
b=HZNFRdsRKMc8gYEikUYu/PxXjaFtWQkOcLVVKk4rjK6sA1bHiJ2LdoaJ93+WyRiBzp
61MKsQy44gliqrC3Gj7XESIiAXU/3slhREbhadfUko0qGCe9L6MGiMiDwIumD5GVshkz
RHoH0HA7Rtrk/wo5LMA+ZFBRFH/xuw7NFXkH6TY6rE/KaxkRy+VgM2AjvOyYo1r1OSvH
BvnMyMOGKHI0wLugAxElO26rg/b/wFnIhrLoSvaGv8ELOalbyhJ8RMflu7ufE0dbYMQI
qjg/kwWmuWnFsVv/20ECRD1S1tI2ONtYfzw6IeyRmkR0Uia+XMlQahDMaa5TmWXLog3C
zCMQ==
ARC-Authentication-Results: i=1; mx.google.com;
spf=pass (google.com: domain of me@mailpotato.net designates 2600:3c03::f03c:93ff:fe6a:6264 as permitted sender) smtp.mailfrom=me@mailpotato.net;
dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
Return-Path: <me@mailpotato.net>
Received: from box.mailpotato.net (box.mailpotato.net. [2600:3c03::f03c:93ff:fe6a:6264])
by mx.google.com with ESMTPS id v18-20020a05620a441200b006fc2db94a39si6049029qkp.661.2022.12.20.14.33.22
for <zsdvzsdv1@gmail.com>
(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
Tue, 20 Dec 2022 14:33:23 -0800 (PST)
Received-SPF: pass (google.com: domain of me@mailpotato.net designates 2600:3c03::f03c:93ff:fe6a:6264 as permitted sender) client-ip=2600:3c03::f03c:93ff:fe6a:6264;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of me@mailpotato.net designates 2600:3c03::f03c:93ff:fe6a:6264 as permitted sender) smtp.mailfrom=me@mailpotato.net;
dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
Authentication-Results: box.mailpotato.net; dkim=none; dkim-atps=neutral
Received: from authenticated-user (box.mailpotato.net [23.239.12.88]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by box.mailpotato.net (Postfix) with ESMTPSA id 44042424D7 for <zsdvzsdv1@gmail.com>; Tue, 20 Dec 2022 17:33:22 -0500 (EST)
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: Sent from Python
To: zsdvzsdv1@gmail.com
From: stuart.clifford@gmail.com
Message-Id: <20221220223322.44042424D7@box.mailpotato.net>
Date: Tue, 20 Dec 2022 17:33:22 -0500 (EST)
Test Message
email from sendinblue as same gmail account, to same gmail account as above:
Delivered-To: zsdvzsdv1@gmail.com
Received: by 2002:a05:7208:550f:b0:5e:f1af:829 with SMTP id t15csp3870305rbf;
Tue, 20 Dec 2022 08:29:23 -0800 (PST)
X-Google-Smtp-Source: AA0mqf4HO9dsPeMKXEuVVhXEz3VqJwvIeHjkRyiR7YvikZCpigayO9GSBgMdOLjRegA2tOPdPZkI
X-Received: by 2002:a5d:670b:0:b0:242:15af:27f with SMTP id o11-20020a5d670b000000b0024215af027fmr27576893wru.28.1671553763507;
Tue, 20 Dec 2022 08:29:23 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1671553763; cv=none;
d=google.com; s=arc-20160816;
b=r87Fj097f2GMpmI8nuQ1Ki7YpdJcQWZL9NRpZvZLDBGQ3R/4O0yEJGrngf2aoD8NDU
bVmbGn4rFyo3tPvw9h+7MBD5/QlcHyapVHGuAS5wKjYllF2xpEVTfOTBMbwZn7oaMpqS
lEqf/YJzDF9LK1m4PkSZivC4XW8Bau6BKNQpLJaitJcSWQL7XVu5+yU9SEPlh9gWJveQ
EmK5Vat27KIdygWM+C6mLvLzJljbK9hbNWWrwRp7KZXc6v1cFLvbLeBM0vYC4qtBusfm
9RgFjoy5qR8frlgK81Y7HcjGnfXm1IxkrxeC4paCWmrXb+fFMLRS0fwAcpxSiZsj0kIJ
MB1A==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
h=reply-to:precedence:message-id:mime-version:list-unsubscribe-post
:list-unsubscribe:list-id:from:feedback-id:date:subject:to
:dkim-signature;
bh=C/wbcU9xwZ0wCK6kNMUvhpNhPVCdntbnDzkVpvjpRyo=;
b=G3DVPuYcf3MeSkfhZGT1nwlr8AABdiKb8e5gU7JTd/Y/lzmYYvl534Y7UJXPUdkGJF
bvP6ychry/61b4XSxvfbNOvgEOBDT+/QSju/TBQlZLhzJi6ty1WJTnOn9s7mPKSKDeyq
DWBbC+pfleuNoq7Zi84LBZ2dlVw6kthaL0R+uKhqeftoWbh9cDdooAytoHn7wohPD83O
QxsNA41C5dWuR+VE7oBkPbSV8w4bIXz8rvBtkfsb2gpbEkdnGLqiMiTmZLB0d0y6aGWw
A6PqVIpRmwmY8oyUNa555n7VU5cBhYSQGqO5UVRSLRT2k59wEjF1+6cgZ95/ZWYeVI+7
R2+Q==
ARC-Authentication-Results: i=1; mx.google.com;
dkim=pass header.i=@sendinblue.com header.s=mail header.b=mQmqInRH;
spf=pass (google.com: domain of bounces-9kc8j-stuart.clifford=gmail.com@kh.d.sender-sib.com designates 77.32.148.112 as permitted sender) smtp.mailfrom="bounces-9kc8j-stuart.clifford=gmail.com@kh.d.sender-sib.com";
dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
Return-Path: <bounces-9kc8j-stuart.clifford=gmail.com@kh.d.sender-sib.com>
Received: from kh.d.sender-sib.com (kh.d.sender-sib.com. [77.32.148.112])
by mx.google.com with ESMTPS id v11-20020adf8b4b000000b00242079eb938si7495311wra.163.2022.12.20.08.29.23
for <zsdvzsdv1@gmail.com>
(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
Tue, 20 Dec 2022 08:29:23 -0800 (PST)
Received-SPF: pass (google.com: domain of bounces-9kc8j-stuart.clifford=gmail.com@kh.d.sender-sib.com designates 77.32.148.112 as permitted sender) client-ip=77.32.148.112;
Authentication-Results: mx.google.com;
dkim=pass header.i=@sendinblue.com header.s=mail header.b=mQmqInRH;
spf=pass (google.com: domain of bounces-9kc8j-stuart.clifford=gmail.com@kh.d.sender-sib.com designates 77.32.148.112 as permitted sender) smtp.mailfrom="bounces-9kc8j-stuart.clifford=gmail.com@kh.d.sender-sib.com";
dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
DKIM-Signature: a=rsa-sha256; bh=C/wbcU9xwZ0wCK6kNMUvhpNhPVCdntbnDzkVpvjpRyo=; c=relaxed/relaxed; d=sendinblue.com; h=to:cc:from:reply-to:subject:date:mime-version:content-type:list-id:list-unsubscribe:x-csa-complaints:list-unsubscribe-post:message-id:sender:x-sib-id:x-mailin-client:x-mailin-campaign:feedback-id; q=dns/txt; s=mail; t=1671553763; v=1; b=mQmqInRHE7ktkCgBD0BzwsUhqaZ3WSB5YGUMc5rgYBlTU6h4DM9CGMoCcCzW+tWLaDh7Lp5i ZIaY6UyanOjCoZKBeXN810krkcI0qmn0BklZDw5vWDPHYwB5D0grU3hgp96UHTB80ajSnr4dNWR stTryYP2vc59netwkoZlx6HI=
To: <zsdvzsdv1@gmail.com>
Subject: SIB to mailtester
Content-Type: multipart/alternative; boundary="-------?=_89162-7652298551171"
Date: Tue, 20 Dec 2022 16:29:23 +0000
Feedback-ID: 77.32.148.112:5469217_2:5469217:Sendinblue
From: stuart <stuart.clifford@gmail.com>
List-Id: NTQ2OTIxNy0zLTI= <NTQ2OTIxNy0zLTI=.list-id.mailin.fr>
List-Unsubscribe: <mailto:unsubscribe@kh.d.sender-sib.com?subject=unsub-91fflcy7j&body=91fflcy7j>,<https://9kc8j.r.ag.d.sendibm3.com/mk/un/li/cA2WzsrfByw4yanUCjqMNttWs5OgHtSnQDfoh9BtMs437BSJnTlbEOCVkcw0sGi0bZtcdGAEQ3HqbcxNvHFJv8K9C-A13aA5eowzcZxioKq8v1ZeRT4l2rvEqNNYRTIDlglNyNj9qejuMbgxJhNSzNNlgM5f6SbpzEI>
List-Unsubscribe-Post: List-Unsubscribe=One-Click
MIME-Version: 1.0
Message-Id: <202220121629.91fflcy7j@kh.d.sender-sib.com>
Precedence: bulk
Reply-To: stuart.clifford@gmail.com
X-Csa-Complaints: csa-complaints@eco.de
X-Mailer: Sendinblue
X-Mailin-Campaign: 2
X-Mailin-Client: 5469217
X-sib-id: Po9m6B-F2bQrjUCEpOKhSmj9mHuWlPua9YP0jFCcDErTJRNwORrp1DiG_iotBtpbGAgmAnsPEv-8NHRnfPbu45w963dQbsUaZVCKFeSpgGPVI5ROB3h_ELNX5p82LZ9NjhRKeAt4riJ1mmppPpnWSHa4pAfan2N0v1V3uOXzLacE6yW93yOSt2RoPNQo9-PCtQNWjgtGsVWKwYMK2cLwAms
---------?=_89162-7652298551171
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset=UTF-8
Dear Customer,
This email will look and feel like a personal email you send to your audien=
ce. There are no images or graphics and no formatting. This way your reader=
s can really focus on the the email message without any distractions. take =
care now
=C2=A0
Best regards,
**Your Company**
[Click here to unsubscribe](https://9kc8j.r.ag.d.sendibm3.com/mk/un/0F2MpbI=
udBtWxxzoRGY6XWiBD3X6KT_2kdBf25Hn5erboD8vnVkfP-1y5mT5GsNuOkLgNZHdedb-DKG5qh=
_GaqeFtpu87SEGiDF_Rp9qX-Sh0TuqWwqm5_NqVuINXFUpWxlIBXxW-svhodyiOaIsP1iszvwQr=
ij-ejE)
---------?=_89162-7652298551171
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset=UTF-8
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org=
/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns=3D"http://www.w3.org/1999/xht=
ml" xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micros=
oft-com:office:office">...</html>
---------?=_89162-7652298551171--
