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What Is a DMARC Aggregate Report and Why You Receive Emails from noreply@dmarc.yahoo.com

If you manage a business domain or corporate email system, you may have received emails from addresses like noreply@dmarc.yahoo.com with attached files ending in .xml.gz. At first …

How to Configure DMARC Enforcement for BIMI in Google Workspace

This knowledge base article provides a technical, implementation-focused guide for configuring DMARC enforcement as a prerequisite for BIMI (Brand Indicators for Message Identifica…

Do Paid Domain-Based Email Services Require SPF, DKIM & DMARC? A Technical Knowledge Base Guide for Google Workspace, Microsoft 365, Yahoo Business Mail & Rediffmail Pro

Modern email delivery is governed by strict anti-spam and anti-phishing standards. Merely purchasing a paid, domain-based email service does not guarantee inbox delivery.Whether yo…

Understanding and Troubleshooting 100% Email Rejection Rates (p=reject; pct=100)

This article explains the technical meaning, causes, diagnostics, and remediation steps for scenarios where email delivery statistics report:p = reject; pct = 100It is intended for…

Google Workspace Email Deliverability & Inbox Placement – Technical Configuration and Troubleshooting Guide

This article provides a practical, technical guide for IT professionals, system administrators, and support engineers responsible for improving email deliverability in Google Works…

DMARC, DKIM, and SPF for Email Authentication

Introduction Email authentication is critical for protecting against spam, phishing, and other malicious activities. DMARC (Domain-based Message Authentication, Reporting, and Conf…

DNS TXT Record Save Failure Due to Mismatched TTL Values

DNS management interfaces may reject changes to TXT records with an error stating that records of the same name and type must have the same TTL value. This issue commonly surfaces …

Email Deliverability Guide: Avoiding Spam Triggers and Improving Inbox Placement

Email deliverability remains a critical concern for IT professionals, system administrators, and support engineers responsible for messaging infrastructure, marketing systems, or t…

Correct DNS Architecture When Using Cloudflare with Hostinger Hosting and Email Services (Hostinger / Google Workspace / Zoho / None)

This Knowledge Base article explains the correct DNS architecture, configuration, and operational best practices when: A domain is delegated to Cloudflare for DNS and security …

Why Business Emails Go to Spam Even When SPF, DKIM, and DMARC Are Correct

Many organizations assume that once SPF, DKIM, and DMARC are configured correctly, all business emails will reliably reach the inbox. In reality, email authentication is only the f…

Step-by-step: fix “email sent as another user” using Google Workspace SMTP Relay + PostMaster

A) Google Workspace (Admin Console) — set up SMTP Relay Open: Admin Console → Apps → Google Workspace → Gmail → Routing → SMTP relay service → Add Setting. Description: Pos…

SPF Configuration for Google Workspace, Zoho Mail, and PHP Website Forms

This article provides a practical technical reference for configuring Sender Policy Framework (SPF) when email is sent from multiple systems, including: Google Workspace Zo…

Domain Name Protection & Brand Security Across TLDs – Technical Knowledge Base

This article provides a technical guide for IT professionals, system administrators, and support engineers on protecting organizational brands across domain extensions (TLDs). It f…

Delayed Delivery of HTML Signature Emails with Inline or Hosted Logos – Technical Analysis & Troubleshooting Guide

This knowledge base article provides a technical deep dive into why emails containing HTML signatures with embedded or hosted logos/images may experience delayed delivery when sent…

Correct Domain Address Formats in Google Workspace Gmail Compliance & Email Restriction Policies

In Google Workspace (Gmail) Admin settings, address lists are commonly used to control allowlisting, blocklisting, and authentication requirements for inbound and outbound email.A …

Google Workspace SMTP Relay (IP-Based) — Architecture, Configuration, EHLO / Envelope-From Errors & Fixes

This Knowledge Base article provides a technical deep dive into Google Workspace Gmail SMTP Relay (IP-based), covering:SMTP Relay architecture and behaviorCorrect configuration for…

How to Fix Email Receiving Issues in Google Workspace (Simple Guide)

If your business email is not receiving messages, the problem is often caused by incorrect DNS settings.DNS settings tell the internet where your emails should go. If something is …

How to Identify Installed Graphics Card and Verify GPU Features & Configuration in Windows

This knowledge base article provides a practical, technical guide for IT professionals, system administrators, and support engineers to: Identify the installed graphics adapter(…

How to Set Up MX Records for Google Workspace (2026)

Email delivery for any domain depends on Mail Exchange (MX) records, a critical DNS configuration that tells the global internet where to deliver incoming email. When you deploy Go…

How to Configure Google Workspace MX Records for Email Delivery (Technical Guide)

This Knowledge Base article provides a technical, implementation-focused guide for configuring MX (Mail Exchange) records for Google Workspace.It is written for IT professionals, s…

Google Workspace vs Microsoft 365 vs Rediffmail Pro – Detailed Technical Comparison for Business Email & Productivity

Selecting the right business email and productivity platform is a strategic IT decision that affects communication reliability, data security, user productivity, and long-term scal…

How to Configure Favicons for PHP Websites (Main Domain & Subdomains) – Complete Technical Guide

This article provides a technical implementation guide for configuring favicons on PHP-based websites, including main domains and subdomains, ensuring proper display in: Browser…

Ultimate Step-by-Step Guide to Launching an AWS EC2 Ubuntu Server and Installing WordPress with Apache

WordPress powers over 40% of the internet, and hosting it on Amazon Web Services (AWS) gives you the flexibility, security, and scalability you need. This guide will walk you throu…

E-Way Bill Not Printing as Second Page with Tally Invoice – Technical Troubleshooting Guide

This Knowledge Base article provides a technical diagnostic and resolution framework for cases where an E-Way Bill (EWB) is generated successfully but does not print as a second pa…

Fixing WhatsApp Web / Multi-Device Instant Disconnect on Xiaomi MIUI (MI 10i & Similar Devices)

This Knowledge Base article provides a technical analysis and remediation steps for WhatsApp Web / Linked Devices sessions that connect and immediately disconnect on Xiaomi MIUI de…

Sulekha.com: Service Discovery Platform Overview, Usage, Benefits, Pros, and Cons

Sulekha.com is a prominent service discovery and lead-generation platform in India, primarily focused on connecting consumers with local service providers and professionals. Unlike…

MX Record TTL Mismatch Between Cloudflare and Hostinger: Technical Impact, Behavior, and Resolution

This article explains why Cloudflare DNS does not provide a 14400-second (4-hour) TTL option while Hostinger recommends TTL 14400 for MX records, and whether this mismatch causes e…

How to Embed a Google Form in an HTML Page with Centered Layout, Custom Background, and Heading

This Knowledge Base article explains how to properly embed a Google Form inside a custom HTML page while: Centering the form on the page Applying a custom background color …

How to Get Official Support from Tally Solutions (Tally Prime) – Complete & Verified Guide

Tally Solutions provides multiple official support channels for users of Tally Prime, covering technical issues, licensing, compliance, data errors, and functional guidance.This ar…

GST Offline Tool White Screen Error – Step-by-Step Solution (2025)

If your GST Offline Tool shows a white screen after the "Starting App…" message, and nothing loads, you’re not alone. This guide walks you through a guaranteed solution that works …

How to Configure Google Workspace SMTP in Postbox: Complete Setup Guide by Bison Infosolutions

? IntroductionEmail remains the backbone of professional communication. Whether you're managing multiple business inboxes or ensuring reliable message delivery, having a secure and…

Outlook Signature Files Location, Structure, and HTML Customization Guide (Technical Knowledge Base)

This Knowledge Base (KB) article provides a detailed technical reference for IT professionals, system administrators, and support engineers on: Outlook signature storage locatio…

Cyber Security in India: Compliance & Threat-Defense Tools, Key Vendors, Registration Norms, and GST/Procurement Claim Process

Cyber security tooling for businesses in India generally falls into two buckets: Threat-defense tools (prevent/detect/respond): EDR/XDR, SIEM/SOAR, IAM/PAM, WAF, email security,…

How to Fix DKIM TXT Record Truncation Issue in DNS: Complete Step-by-Step Guide for Google Workspace

What is DKIM?DKIM (DomainKeys Identified Mail) is an email authentication method that adds a digital signature to your outgoing emails. It prevents spoofing and ensures that receiv…

How to Close Your Kotak Securities Account: A Step-by-Step Guide

If you've decided to close your Kotak Securities account, whether due to personal reasons or a shift in your investment strategy, the process is straightforward and can be complete…

How to Add a WYSIWYG Editor in PHP Pages Using TinyMCE and Trumbowyg

A WYSIWYG (What You See Is What You Get) editor makes it easier for users to edit and format content on websites, blogs, or knowledgebase platforms — without writing raw HTML. Popu…

How to Restrict Email Communication to Approved Domains and Limit Attachment Size in Microsoft 365

Email remains one of the most common channels for data exchange—and also one of the most exploited attack vectors. Organizations handling financial, legal, or confidential informat…

1D vs 2D vs 3D Barcode Scanners

Barcode scanners are optical data capture devices used across POS systems, warehouses, healthcare, logistics, manufacturing, and access control. This article explains:Differences b…

How to Run Windows Update from Command Line (CMD & PowerShell)

Method 1: Using Command Prompt (CMD) Open Command Prompt with Administrator Privileges Press Windows + S, type cmd, and right-click Command Prompt. Select Run as Administrator. …

How to Change iTunes Backup Location Using the MKLINK Command in Windows

iTunes stores your device backups in a specific folder on your computer. However, if you want to change the location where iTunes saves these backups (for example, to a larger driv…

NoSky Cloud Backup Solution — Comprehensive Technical Knowledge Base

Cloud backup and disaster recovery are essential components of modern IT infrastructure. NoSky is a secure, scalable cloud backup and recovery solution designed to protect business…

What Are Device Drivers, How to Get Them & An Overview of DriverPack

In any computer system, hardware components such as graphics cards, network adapters, printers, sound cards, USB controllers, etc., need software to communicate with the operating …

What Are Google Fonts? Benefits and Complete Overview for Designers & Developers

What Are Google Fonts? Google Fonts is a free and open-source collection of web fonts provided by Google. It allows developers, designers, and content creators to use high-quality…

Fix Outlook Not Closing Properly – One-Click Batch File to Restart Outlook

If you've ever encountered the issue where Microsoft Outlook doesn't exit properly and won't reopen unless you manually end its process in Task Manager, you're not alone. This is a…

How to Set Up a PIN and Enable Auto-Lock After Inactivity in Windows 11

Windows 11 offers advanced sign-in and security options to protect your system. Among the most useful features are the Windows Hello PIN and the ability to automatically lock your …

Why Is My Email Link Showing Blue Instead of Black? (Easy Fix Guide)

Have you ever created a beautiful email signature, only to see your email address appear in blue instead of black?This is very common. Email apps like Outlook and Gmail automatical…

Why Are Most Country Flags Rectangular? Myths, Facts, and Countries with Different Flag Shapes

When we look at country flags, most of them are rectangular. But you may have noticed a few square flags and even one triangular flag in the world.This article explains, in simple…

Google Colab Pro vs Colab Pro+ — Technical Overview, Compute Units, and Usage Guide

This article explains Google Colab Pro and Google Colab Pro+ from a technical and operational perspective. It is intended for IT professionals, system administrators, data enginee…

TSplus Remote Support: Secure Browser-Based Remote Assistance for IT Support Teams

TSplus Remote Support is a lightweight, browser-based remote assistance solution designed for IT professionals, system administrators, MSPs, and support teams. It enables secure on…

Lenovo MA Pack for Server AMC – Technical Knowledge Base Guide

In enterprise IT environments, server uptime and vendor-backed support are critical. MA Pack is Lenovo’s standardized way of delivering Annual Maintenance Contract (AMC) and extend…