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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 …

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 …

Antivirus Products in India: Types, Blacklist vs Whitelist (Allowlisting) Models, and Where CatchPulse Fits

Businesses in India commonly buy “antivirus,” but modern endpoint security is broader than classic virus scanning. Today’s products may include EPP (Endpoint Protection Platform), …

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…

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…

Microsoft 365 Business Compliance Features: Detailed Technical Overview with Practical Examples

Organizations using Microsoft 365 Business accounts are subject to increasing regulatory, legal, and internal compliance requirements. These include data protection laws, industry …

Blocking Emails Containing PAN or Aadhaar Numbers in Microsoft 365 Business Email (Inbound & Outbound)

Organizations in India that use Microsoft 365 Business Email (Exchange Online) must ensure that sensitive personal identifiers such as PAN (Permanent Account Number) and Aadhaar Nu…

Remote Support Tools Comparison (TeamViewer, AnyDesk, UltraViewer & Alternatives): Pricing, Features, Performance, Pros/Cons, and Security Risks

Remote support tools let an IT technician view/control a user’s computer over the internet to troubleshoot issues, install software, transfer files, and provide real-time assistanc…

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…

Detecting and Preventing Hyper-V, Virtual NIC, and RDP Takeover Persistence on Windows Servers – A Complete Incident Response & Hardening Guide

Modern Windows Server attacks rarely stop at initial access. Once attackers obtain administrator or SYSTEM-level execution, they often attempt to establish persistence by enabling …

Blocking Emails Containing PAN or Aadhaar Numbers in Google Workspace (Inbound & Outbound)

Indian organizations handling financial, identity, HR, or compliance-sensitive data must prevent accidental or unauthorized sharing of PAN (Permanent Account Number) and Aadhaar Nu…

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…

Ransomware Explained: Origin, History, Major Types, Known Families, and Secure Removal Practices

Ransomware is one of the most disruptive and financially damaging cyber threats facing individuals, businesses, and governments today. It encrypts or locks access to systems and da…

Cyber Security Explained: Purpose, Implementation, Key Companies, and How It Differs from Antivirus Software

Cyber security is the practice of protecting systems, networks, applications, and data from digital attacks. These attacks are no longer limited to simple viruses. Modern threats i…

Quick Heal vs CatchPulse: Technical Comparison for Endpoint Protection

Selecting the right endpoint security solution is critical in today’s threat landscape. Quick Heal (a commonly deployed traditional antivirus/endpoint protection suite in India) an…

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 …

What Is g.co/sc and Why Is Google Using It?

Many users are recently noticing a short URL — g.co/sc — appearing in browser address bars, emails, notifications, and Google-generated messages. This can feel unfamiliar or even s…

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 Compliance Features: Detailed Technical Overview with Practical Examples

Modern organizations must comply with data protection laws, industry regulations, internal governance policies, and audit requirements. Google Workspace provides a comprehensive se…

What Is an Email Preheader? A Technical Guide to Preheader Text in Email Campaigns

An email preheader is a short line of text that appears immediately after the subject line in an email client’s inbox preview. It provides recipients with additional context about …

Quick Heal Antivirus Products: Overview, Product Types, and Business Benefits

Quick Heal is one of India’s long-established cybersecurity vendors, widely used in home, SMB, enterprise, and government environments. Its product portfolio has evolved from tradi…

10 Tips to Improve and Ensure Your Internet Security – A Practical IT Security Guide

Internet security is no longer optional. With increasing use of cloud services, remote access, online banking, and digital communication, systems connected to the internet are cons…

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…

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…

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 …

Dial-Up Modems: History, Technology, Successors, and Modern Connectivity Options

Dial-up modems were the foundation of early computer networking and internet access, enabling digital communication over standard telephone lines. Though largely obsolete today, di…

GoDaddy Email POP3 & IMAP Settings for Outlook and Thunderbird – Complete Configuration Guide

This Knowledge Base article provides a comprehensive and technical guide to configure GoDaddy email accounts using POP3 or IMAP protocols in Microsoft Outlook and Mozilla Thunderbi…

Spectrum in Telecommunications – Meaning, Allocation, Bidding Process, Working Principles & Governance (Technical Guide)

In telecommunications, spectrum is one of the most critical and regulated resources. Every mobile call, SMS, internet session, satellite link, radio broadcast, and wireless signal …

How to Share SMTP Email Details Safely for a requirement of App Password for Web Applications or Whitelisting Requirements (Google Workspace Users)

When a travel portal sends booking confirmations, invoices, or alerts, it needs an email system to send those messages automatically. This is done using something called SMTP.If n…

Gmail Free vs Google Workspace: What They Are, Key Benefits, Techniques & How to Choose

Gmail is the free email service provided by Google for individuals. Google Workspace (formerly G Suite) is a paid cloud-productivity and collaboration suite designed for businesses…

Yahoo Free Email (All Domains) Configuration in Outlook & Mozilla Thunderbird – Complete Technical Guide

This Knowledge Base article provides a complete, standardized procedure to configure Yahoo free email accounts—across all supported Yahoo domains—in Microsoft Outlook and Mozilla T…

Hotmail.com & Outlook.com Email Configuration in Outlook and Thunderbird (Free Microsoft Email)

This Knowledge Base article provides a complete, technical, and practical guide to configure free Microsoft email accounts such as hotmail.com and outlook.com in desktop email clie…

GMX Email Setup in Microsoft Outlook & Mozilla Thunderbird – Complete Configuration Guide

This Knowledge Base article provides a detailed, technical, and practical guide for configuring GMX (Global Mail eXchange) email accounts in Microsoft Outlook and Mozilla Thunderbi…

Mail.com Email Setup in Microsoft Outlook & Mozilla Thunderbird – Complete Configuration Guide

This Knowledge Base article provides a detailed, technical, and practical guide for configuring Mail.com free email accounts in Microsoft Outlook and Mozilla Thunderbird.It is desi…

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…

Microsoft Outlook Features and Shortcut Commands for Everyday Productivity

Microsoft Outlook is a core productivity application used daily for email communication, calendar management, contacts, and task tracking. When used beyond basic email reading—by l…

How to Send Invoices from Tally Using Gmail – Step-by-Step Setup Guide

Sending invoices directly from Tally using Gmail helps you share bills quickly, professionally, and without any manual attachment work. Once Gmail and Tally are configured properly…

Setting Up POP and IMAP for Third-Party Email Applications

Introduction POP (Post Office Protocol) and IMAP (Internet Message Access Protocol) are two standard protocols used for retrieving emails from a server. While both serve the purpos…

Mailfence Email Setup in Microsoft Outlook & Mozilla Thunderbird – Complete Configuration Guide

This Knowledge Base article provides a detailed, professional, and technically accurate guide to configure Mailfence email accounts in Microsoft Outlook and Mozilla Thunderbird.It …

Mozilla Thunderbird Email Client – Complete Technical Knowledge Base Guide

Mozilla Thunderbird is a free, open-source desktop email client designed for managing emails, calendars, contacts, and tasks across multiple accounts. Developed and maintained by t…

Google Chat: What It Is, Its Benefits, Techniques & How To Use It Effectively

Google Chat is a cloud-based messaging and collaboration platform developed by Google that enables teams and individuals to communicate, share files, coordinate projects and collab…

Difference Between POP, IMAP, and Other Email Access Methods: Technical Comparison, Use Cases, and Best Practices

Email access methods define how email clients retrieve, synchronize, and store messages from a mail server. The choice of protocol directly affects data availability, security, dev…

Microsoft Office and Office Productivity Suites: History, Current Versions, Competitors, and Future Direction

Microsoft Office has been one of the most influential productivity software suites in computing history. From standalone desktop applications in the 1990s to today’s cloud-connecte…

How to Secure Office Computers – A Practical IT Security Guide

Office computers store sensitive business data such as customer information, financial records, emails, credentials, and intellectual property. A single compromised system can lead…

Self-Declaration of Witness for NGO Darpan Registration

NGO Darpan, an initiative by NITI Aayog under the Government of India, aims to maintain transparency, accountability, and authenticity of Non-Governmental Organizations (NGOs) func…

Compliance Features in Google Workspace

Introduction Google Workspace offers a range of compliance features designed to help organizations meet regulatory requirements and maintain data security. This knowledge base expl…

Stock Market (Share Market): Complete Technical Guide – How It Works, Key Participants & Best Practices

1. Introduction to the Stock Market (Share Market)The stock market, also known as the share market, is a regulated marketplace where shares (equity), bonds, derivatives, and other …

Cygnet FACE – GST Compliance, Reconciliation & Automation Platform | Technical Knowledge Base

Cygnet FACE is an enterprise-grade GST compliance and reconciliation platform developed by Cygnet Infotech Private Limited. FACE (Fully Automated Compliance Engine) is designed to …

File Sharing Software and Online Platforms: Secure Design, Implementation, and Best Practices

File sharing software and online platforms allow users to store, sync, and exchange files across devices and locations. These tools are now foundational in Information Technology e…

Ethical Hacking – Working Principles, Benefits, Career Scope, Skills, Institutes, Tools & Salary in India

Ethical Hacking is the authorized practice of identifying, testing, and fixing security vulnerabilities in computer systems, networks, applications, and digital infrastructure. Eth…