NetKnow Corporate Blog

Content preview: Hi, Just following up on my previous email to see if you had

a chance to review our mobile app development services. If you're considering

a new app or upgrading an existing one, we'd be happy to offer a free consultation.





Content analysis details: (5.5 points, 5.0 required)



pts rule name description

---- ---------------------- --------------------------------------------------

1.5 RCVD_IN_AHBL RBL: AHBL: sender is listed in dnsbl.ahbl.org

[52.103.74.32 listed in dnsbl.ahbl.org]

[52.103.74.32 listed in dnsbl.ahbl.org]

[52.103.74.32 listed in dnsbl.ahbl.org]

[52.103.74.32 listed in dnsbl.ahbl.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[dnsbl.ahbl.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[dnsbl.ahbl.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[dnsbl.ahbl.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[dnsbl.ahbl.org]

0.0 RCVD_IN_AHBL_RTB RBL: AHBL: Real-Time Blocked in dnsbl.ahbl.org

[52.103.74.32 listed in dnsbl.ahbl.org]

0.5 RCVD_IN_AHBL_PROXY RBL: AHBL: Open Proxy server in dnsbl.ahbl.org

[52.103.74.32 listed in dnsbl.ahbl.org]

0.5 RCVD_IN_AHBL_SMTP RBL: AHBL: Open SMTP relay in dnsbl.ahbl.org

[52.103.74.32 listed in dnsbl.ahbl.org]

1.5 RCVD_IN_AHBL_SPAM RBL: AHBL: Spam Source in dnsbl.ahbl.org

[52.103.74.32 listed in dnsbl.ahbl.org]

1.0 RCVD_IN_WSFF RBL: Received via a relay in will-spam-for-food.eu.org

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[2603:1096:301:a0:0:0:0:14 listed in]

[will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

[52.103.74.32 listed in will-spam-for-food.eu.org]

-0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no

trust

[52.103.74.32 listed in list.dnswl.org]

-3.0 RCVD_IN_RP_CERTIFIED RBL: Sender in ReturnPath Certified - Contact

cert-sa@returnpath.net

[Excessive Number of Queries | ]

-2.0 RCVD_IN_RP_SAFE RBL: Sender in ReturnPath Safe - Contact

safe-sa@returnpath.net

[Excessive Number of Queries | ]

-0.0 SPF_HELO_PASS SPF: HELO matches SPF record

-0.0 SPF_PASS SPF: sender matches SPF record

1.3 RCVD_IN_RP_RNBL RBL: Relay in RNBL,

https://senderscore.org/blacklistlookup/

[52.103.74.32 listed in bl.score.senderscore.com]

1.2 MISSING_HEADERS Missing To: header

0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider

[scotselton(at)outlook.com]

-0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay

domain

1.7 DEAR_SOMETHING BODY: Contains 'Dear (something)'

-0.2 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2)

[52.103.74.32 listed in wl.mailspike.net]

0.0 HTML_MESSAGE BODY: HTML included in message

0.0 HTML_FONT_SIZE_HUGE BODY: HTML font size is huge

0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid

1.4 MALFORMED_FREEMAIL Bad headers on message from free email service

Subject: {SPAM?} Re: Creating App !!



--_000_PS2P216MB12986DC1E2FB55DB6840E20BD8F52PS2P216MB1298KORP_

Content-Type: text/plain; charset="Windows-1252"

Content-Transfer-Encoding: quoted-printable



Hi,

Just following up on my previous email to see if you had a chance to review=

our mobile app development services.



If you're considering a new app or upgrading an existing one, we'd be happy=

to offer a free consultation.



Thanks





________________________________

From: scot selton

Sent: Friday, June 26, 2026 1:18 PM

Subject: Creating App !!



Dear Sir/Madam,

I hope you are doing well.

We are a mobile app development team specializing in building custom, scala=

ble, and user-friendly applications for businesses across multiple industri=

es. Our goal is to help companies digitize their services and improve custo=

mer engagement through mobile technology.

We develop applications in the following domains:

=95 Health & Healthcare Apps

=95 Fitness & Wellness Apps

=95 E-commerce & Online Store Apps

=95 Shopping & Marketplace Apps

=95 Logistics & Delivery Apps

=95 Real Estate Apps

=95 Retail Management Apps

=95 Booking & Appointment Apps

=95 Education & E-learning Apps

=95 Gym & Personal Training Apps

We focus on creating apps that are modern, fast, and designed to meet real =

business needs.

If you are planning to develop a mobile app or already have an idea, we wou=

ld be happy to discuss it and provide the best possible solution.

Please share your app idea or requirements so we can guide you further.

Thanks







--_000_PS2P216MB12986DC1E2FB55DB6840E20BD8F52PS2P216MB1298KORP_

Content-Type: text/html; charset="Windows-1252"

Content-Transfer-Encoding: quoted-printable








252">

pt; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, H=

elvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">

Hi,

pt; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, H=

elvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">

Just following up on my previous email to see if you had a chance to review=

our mobile app development services.

X-Mozilla-Status: 0001

X-Mozilla-Status2: 00000000

Return-path:

Envelope-to: dave@doctor.nl2k.ab.ca

Delivery-date: Wed, 01 Jul 2026 23:04:00 -0600

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Resent-Message-ID:

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([fe80::f1b5:323b:1f57:f9ee%4]) with mapi id 15.21.0181.009; Thu, 2 Jul 2026

04:00:17 +0000

From: scot selton

Subject: Re: Creating App !!

Thread-Topic: Creating App !!

Thread-Index: AQHdBUAswcA4NieQcE2fQpkwl0nL5bZZo++x

Date: Thu, 2 Jul 2026 04:00:17 +0000

Message-ID:



References:



In-Reply-To:



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Thu, 02 Jul 2026 11:36:06 +0800

Date: Thu, 02 Jul 2026 11:36:06 +0800

From: "Nancy Yang"

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Content preview: Hi valuable client, We noticed your company is involved in

Building and managing Data centers.



Content analysis details: (6.0 points, 5.0 required)



pts rule name description

---- ---------------------- --------------------------------------------------

1.0 RCVD_IN_WSFF RBL: Received via a relay in will-spam-for-food.eu.org

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

[140.205.208.126 listed in will-spam-for-food.eu.org]

1.5 RCVD_IN_AHBL RBL: AHBL: sender is listed in dnsbl.ahbl.org

[140.205.208.126 listed in dnsbl.ahbl.org]

[140.205.208.126 listed in dnsbl.ahbl.org]

[140.205.208.126 listed in dnsbl.ahbl.org]

[140.205.208.126 listed in dnsbl.ahbl.org]

0.0 RCVD_IN_AHBL_RTB RBL: AHBL: Real-Time Blocked in dnsbl.ahbl.org

[140.205.208.126 listed in dnsbl.ahbl.org]

0.5 RCVD_IN_AHBL_PROXY RBL: AHBL: Open Proxy server in dnsbl.ahbl.org

[140.205.208.126 listed in dnsbl.ahbl.org]

0.5 RCVD_IN_AHBL_SMTP RBL: AHBL: Open SMTP relay in dnsbl.ahbl.org

[140.205.208.126 listed in dnsbl.ahbl.org]

1.5 RCVD_IN_AHBL_SPAM RBL: AHBL: Spam Source in dnsbl.ahbl.org

[140.205.208.126 listed in dnsbl.ahbl.org]

-3.0 RCVD_IN_RP_CERTIFIED RBL: Sender in ReturnPath Certified - Contact

cert-sa@returnpath.net

[Excessive Number of Queries | ]

-2.0 RCVD_IN_RP_SAFE RBL: Sender in ReturnPath Safe - Contact

safe-sa@returnpath.net

[Excessive Number of Queries | ]

-0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no

trust

[140.205.208.126 listed in list.dnswl.org]

-0.2 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2)

[140.205.208.126 listed in wl.mailspike.net]

-0.0 SPF_PASS SPF: sender matches SPF record

1.3 RCVD_IN_RP_RNBL RBL: Relay in RNBL,

https://senderscore.org/blacklistlookup/

[140.205.208.126 listed in bl.score.senderscore.com]

0.4 SALES_REPLY Your parents named you sales?

1.1 MIME_HTML_ONLY BODY: Message only has text/html MIME parts

0.0 HTML_MESSAGE BODY: HTML included in message

0.0 HTML_FONT_SIZE_HUGE BODY: HTML font size is huge

0.7 HTML_IMAGE_ONLY_20 BODY: HTML: images with 1600-2000 bytes of words

0.0 MIME_QP_LONG_LINE RAW: Quoted-printable line longer than 76 chars

0.6 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag

0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid

2.0 RATWR8_MESSID Message-ID with excessive dashes and dollars

0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines

Subject: {SPAM?} =?UTF-8?B?SW5zdWxhdGlvbiAmIE1FUCBtYXRlcmlhbHMgZm9yIHlvdXIgRGF0YSBDZW50ZXIgUHJvamVj?=

=?UTF-8?B?dHM=?=

Hi valuable client,

=3D"font-size:12px">

We notic=

ed your company is involved in Building and managing Data centers.

<=

p>

2px">I'm Nancy from China Iking Group. We manufacture thermal insulation
style=3D"color:#ff0000"> Rubber foam, Glass wool and MEP products speci=

fically for data center cooling and pipeline systems.

=3D"font-size:12px">

"font-size:12px">Since data centers require strict temperature control=

, we supply materials that meet high fire-proof and thermal s=

tandards, directly from our factory to help you control project costs=

.

span>

Are you op=

en to testing new suppliers for your upcoming projects ? we can send a=

short Catalog for your reference within 1 hour.

=

ol-pipe-for-Data-center.jpg" _src=3D"https://i.postimg.cc/LsdnJRZV/glass-wool-=

pipe-for-Data-center.jpg" referrerpolicy=3D"no-referrer" style=3D"width: 585.3=

33px; height: 434.333px;"/>

com/trace/v1/report?bid=3D2538913&env=3D600000324222737146&mac=3D410132&mf=3Dv=

ip%40vip.ikinginsulation.ltd&msgid=3Df5a1735b-ccd7-4180-b268-88c2fab6e558%40al=

ibaba.com&sac=3D0&tag=3DGLASSWOOL&tid=3D2538913&to=3Droot%40nk.ca&tpl=3D&ts=3D=

1782963366&type=3D1&url=3D&v=3D1.0&sign=3D7c01c9d2dbf2b45cd1710abfd431e2c3&url=

ts=3D1782963850" alt=3D"" style=3D"display: none; width: 1px; height: 1px;" />