डाउनटाइम और एरर

गाइड · डाउनटाइम और एरर503 Service Unavailable: What It Means and How to Fix It Step by StepDiagnose a 503 Service Unavailable error from overload, maintenance mode, exhausted workers or a dead backend, with fixes for WordPress, nginx, Apache and IIS.8 मिनट पढ़ने में

गाइड · डाउनटाइम और एररAadhaar / UIDAI Portal Not Working: Checks and Safe WorkaroundsWhat to check when the UIDAI website, myAadhaar login or Aadhaar OTP fails, how to separate a portal problem from your own, and how to avoid scams.7 मिनट पढ़ने में

गाइड · डाउनटाइम और एररCloudflare 520-526 Errors Explained: Meaning and Fixes for EachA code-by-code guide to Cloudflare 520, 521, 522, 523, 524, 525, 526 and 530 errors, with origin tests, SSL mode fixes and firewall rules that resolve them.10 मिनट पढ़ने में

गाइड · डाउनटाइम और एररDigiLocker Not Working? Login, OTP and Document Fetch FixesTroubleshoot DigiLocker login, OTP, app crashes and documents that will not fetch, and learn how to tell a DigiLocker outage from a problem on your side.7 मिनट पढ़ने में

गाइड · डाउनटाइम और एररERR_CONNECTION_REFUSED vs Timed Out vs Reset: What Each MeansUnderstand what ERR_CONNECTION_REFUSED, ERR_CONNECTION_TIMED_OUT and ERR_CONNECTION_RESET reveal about TCP, and how to diagnose each with nc, curl, ss and mtr.10 मिनट पढ़ने में

गाइड · डाउनटाइम और एररFix 500 Internal Server Error: A Practical Guide for Site OwnersTrack down a 500 Internal Server Error with error logs, .htaccess and PHP checks, permission fixes and WordPress debugging, plus when your host must step in.9 मिनट पढ़ने में

गाइड · डाउनटाइम और एररHow to Fix a 502 Bad Gateway Error (nginx, Apache, PHP-FPM, CDN)What a 502 Bad Gateway really means, how to find the failing upstream with logs and curl, and fixes for nginx, Apache, PHP-FPM, Node and Cloudflare setups.8 मिनट पढ़ने में

गाइड · डाउनटाइम और एररHow to Fix a 504 Gateway Timeout: Causes, Logs and TimeoutsFind out why a proxy gave up waiting on your backend, how to spot slow queries and stuck workers, and which nginx, Apache, PHP and CDN timeouts to change.9 मिनट पढ़ने में

गाइड · डाउनटाइम और एररHow to Tell Customers Your Website Is Down (With Copy-Paste Messages)A practical plan for small businesses: who to tell first, which channels to use when your site is down, and ready-to-paste messages for social, email, phone and chat.8 मिनट पढ़ने में

गाइड · डाउनटाइम और एररIncome Tax Portal Not Working During ITR Filing: Fixes and Order of StepsWhat to do when the income tax e-filing portal is slow, shows errors, rejects OTP or fails to submit your ITR, with safe retry habits and scam warnings.7 मिनट पढ़ने में

गाइड · डाउनटाइम और एररIs a Website Down for Everyone or Just Me? How to Check ProperlyLearn how to tell a real outage from a local problem using DNS, curl and outside vantage points, plus the fixes for DNS cache, VPN, ISP and browser causes.9 मिनट पढ़ने में

गाइड · डाउनटाइम और एररWebsite Down? The First 15 Minutes Checklist for OwnersA calm, numbered checklist for the first 15 minutes after your website goes down: confirm it, find the layer that broke, check the usual suspects, and know when to escalate.7 मिनट पढ़ने में

गाइड · डाउनटाइम और एररWhy Is My Website Down? 12 Causes and How to Diagnose EachA layer-by-layer method for finding why your website is down, with 12 common causes, the commands that expose each one, and when to escalate to your host.10 मिनट पढ़ने में

मॉनिटरिंग

गाइड · मॉनिटरिंगA Blameless Incident Postmortem Template With a Worked ExampleWrite a blameless incident postmortem that drives real fixes: timeline, root cause vs contributing factors, 5 whys limits, a copy-paste template and an example.10 मिनट पढ़ने में

गाइड · मॉनिटरिंगAlert Fatigue and On-Call Basics for Small TeamsSet severity levels, escalation paths, alert thresholds and runbooks so a small team gets paged for real problems only and still sleeps through the night.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगCron Job Heartbeat Monitoring to Catch Silent Failures EarlyLearn how heartbeat monitoring catches silent cron failures, with copy-ready examples for crontab, systemd, GitHub Actions, Docker, WP-Cron, Laravel and more.9 मिनट पढ़ने में

गाइड · मॉनिटरिंगDDoS Basics for Website Owners: Symptoms, Triage and ProtectionWhat a DDoS attack is, how to tell it from a legitimate traffic spike, and the basic defenses (CDN, WAF, rate limiting) plus what to tell your hosting provider.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगHow Often Should You Monitor a Website? Choosing Check IntervalsPick the right uptime check interval for each part of your site. See how interval, retries and alert delay combine into real detection time, and what to avoid.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगHow to Monitor API Endpoints: Status, JSON Checks, Latency and CronSet up reliable API monitoring: choose endpoints, validate status and JSON fields, handle auth headers safely, track latency and watch scheduled jobs.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगHow to Reduce False Alerts in Website Monitoring Without GapsStop false uptime alerts without losing real ones: confirmation checks, retries, timeouts, WAF blocks, keyword checks, maintenance windows and slow alerts.9 मिनट पढ़ने में

गाइड · मॉनिटरिंगSet Up a Free Status Page for Your Small Business (Step by Step)Create a free public status page that shows customers whether your website is up, with plain steps for choosing components, connecting monitors and writing updates.7 मिनट पढ़ने में

गाइड · मॉनिटरिंगSLA Uptime Calculation: Exclusions, Credits and How to Write OneHow hosting providers calculate SLA uptime, what exclusions and service credits mean in practice, and how agencies should word an SLA they can actually meet.7 मिनट पढ़ने में

गाइड · मॉनिटरिंगStatus Page Message Templates: Incident and Maintenance ExamplesCopy-ready status page messages for investigating, identified, monitoring and resolved updates and planned maintenance, with tone rules and worked examples.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगSynthetic vs Real User Monitoring: Differences and When to Use EachCompare synthetic monitoring and real user monitoring (RUM), what each can and cannot see, when to use which, and how to get both with free options.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगUptime Monitoring for Small Business - What to Check First and WhyA practical plan for small businesses: what to monitor first, how to route alerts, a first-response runbook, budget options and checks not worth setting up.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगWebsite Maintenance Mode Done Right With 503 and Retry-AfterPut your site into maintenance mode correctly with a 503 and Retry-After. Examples for WordPress, Laravel, nginx and Apache, plus CDN caching and SEO pitfalls.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगWebsite Status Page Guide - What to Publish and How to Word UpdatesLearn what a good status page contains, how to structure components and word investigating, identified, monitoring and resolved updates, with templates.8 मिनट पढ़ने में

गाइड · मॉनिटरिंगWhat 99.9% Uptime Really Means in Minutes, Hours and Days per YearA clear guide to uptime percentages with an exact downtime table for 99% to 99.999%, plus SLA vs SLO, measured vs reported uptime and check frequency.8 मिनट पढ़ने में

वर्डप्रेस

गाइड · वर्डप्रेसHacked WordPress Site Recovery: Detect, Clean Up and Lock It DownStep-by-step recovery for a hacked WordPress site: spot malware symptoms, contain it, restore from backups, reset credentials, clean files and database, then harden.8 मिनट पढ़ने में

गाइड · वर्डप्रेसMove WordPress from HTTP to HTTPS: Complete SSL Migration GuideMigrate WordPress to HTTPS safely: install a certificate, update URLs with WP-CLI search-replace, fix mixed content, set 301 redirects and add HSTS.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress "Allowed Memory Size Exhausted" Error: How to Raise the LimitFix the WordPress "Allowed memory size exhausted" fatal error by raising WP_MEMORY_LIMIT, php.ini, .user.ini or .htaccess limits and finding what uses the memory.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress "Error Establishing a Database Connection": How to Fix ItFix the WordPress error establishing a database connection: check wp-config.php credentials, test MySQL, run repair mode with WP_ALLOW_REPAIR and spot host limits.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress "Too Many Redirects" (ERR_TOO_MANY_REDIRECTS): How to Fix ItFix the WordPress redirect loop: check siteurl and home, HTTPS plugins, caching, .htaccess and nginx rules, and the Cloudflare Flexible SSL loop.7 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress Email Not Sending: Fix Contact Forms, Resets and Order EmailsFix WordPress emails that never arrive or land in spam: PHP mail vs SMTP, wp_mail testing, SPF, DKIM and DMARC records, and how to debug delivery step by step.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress Plugin Conflict Troubleshooting: A Safe Step-by-Step MethodFind the plugin or theme breaking your WordPress site: safe testing on staging, binary search, WP-CLI commands, renaming folders when locked out, and debug logs.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress Security Hardening Checklist: 25 Practical StepsA practical WordPress hardening checklist: updates, strong logins and 2FA, file permissions, wp-config.php constants, security headers, backups and monitoring.7 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress Slow Site Speed Checklist: Find and Fix the BottleneckA practical WordPress speed checklist covering hosting, TTFB, caching, images, plugins and database cleanup, with measurement tools and WP-CLI commands.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress Stuck in Maintenance Mode: Delete .maintenance and Fix the UpdateFix "Briefly unavailable for scheduled maintenance": delete the .maintenance file, finish a failed core, plugin or theme update, and prevent it from happening again.8 मिनट पढ़ने में

गाइड · वर्डप्रेसWordPress White Screen of Death: Causes and Step-by-Step FixesFix the WordPress white screen of death: turn on WP_DEBUG, find the failing plugin or theme, raise the memory limit, and check PHP version problems.7 मिनट पढ़ने में

गाइड · वर्डप्रेसWP-Cron Explained: Fix Missed Schedules and Switch to a Real Cron JobHow WordPress WP-Cron works, why scheduled posts and tasks get missed, how to set DISABLE_WP_CRON with a real system cron, and how to monitor it with heartbeats.8 मिनट पढ़ने में

ई-कॉमर्स

गाइड · ई-कॉमर्सBlack Friday Website Readiness Checklist: 8 Weeks to Launch DayA dated checklist for getting an online store ready for Black Friday: capacity, caching, DNS, SSL, payments, monitoring, change freeze and rollback.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सDoes Website Downtime Hurt SEO? What Google Says About 503 and OutagesHow outages affect Google crawling and rankings, why a 503 with Retry-After is the right response, how short and long outages differ, and how to recover.8 मिनट पढ़ने में

गाइड · ई-कॉमर्सE-commerce Order Email Deliverability: Why Confirmations Go MissingMake order confirmations and shipping emails reach inboxes: SPF, DKIM, DMARC, sender setup for Shopify and WooCommerce, testing, bounces and monitoring.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सE-commerce Site Security Checklist: 30 Checks for Online StoresA practical security checklist for online stores covering HTTPS, headers, payment pages, third-party scripts, admin access, updates, backups and monitoring.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सHow to Calculate the Cost of E-commerce Downtime (Formula and Example)A step-by-step method to estimate what an hour of downtime costs your online store, with a worked example using your own numbers, not industry averages.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सPayment Gateway Downtime Monitoring: Checkout, Webhooks and HeartbeatsDetect payment failures before customers complain: checkout keyword checks, webhook endpoint monitoring, heartbeat monitors for payment events and alerts.8 मिनट पढ़ने में

गाइड · ई-कॉमर्सShopify Custom Domain DNS Setup: A Record, CNAME and VerificationHow to point your own domain at Shopify with the right A record and www CNAME, verify the connection, pick a primary domain and avoid common DNS mistakes.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सShopify Redirects and URL Structure: Fixes, Limits and Best PracticesHow Shopify URLs are structured and how to create and bulk-import URL redirects, handle changed handles and deleted products, and avoid chains and 404s.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सShopify SSL Certificate Pending or Not Working: Causes and FixesWhy a Shopify domain shows SSL pending or a certificate warning, and a checklist of DNS, CAA, proxy and redirect problems to clear so the certificate issues.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सShopify Store Speed Optimization: What You Can Actually ControlA practical guide to speeding up a Shopify store: measure first, then fix apps, third-party scripts, images, fonts and theme code within Shopify limits.7 मिनट पढ़ने में

गाइड · ई-कॉमर्सWooCommerce Checkout Errors: Troubleshooting Guide for Store OwnersDiagnose WooCommerce checkout failures step by step: caching, AJAX and REST errors, plugin conflicts, sessions, payment gateways, SSL and server limits.8 मिनट पढ़ने में

होस्टिंग और CDN

गाइड · होस्टिंग और CDNApache vs nginx Troubleshooting: Logs, Config Tests and Common ErrorsSide-by-side troubleshooting for Apache and nginx: where logs live, config test commands, restart vs reload, and fixes for the most common startup and runtime errors.8 मिनट पढ़ने में

गाइड · होस्टिंग और CDNCDN Explained: What It Does, When You Need One, and How Caching WorksUnderstand how a content delivery network works, which headers control caching, what origin shield does, when a CDN helps or hurts, and how to verify it is working.7 मिनट पढ़ने में

गाइड · होस्टिंग और CDNCloudflare Cache Rules and Purge: What Gets Cached and How to Clear ItHow Cloudflare decides what to cache, how to read cf-cache-status, build cache rules, set TTLs, and purge by URL, tag, prefix or everything without hurting performance.7 मिनट पढ़ने में

गाइड · होस्टिंग और CDNCloudflare Setup: DNS Records, Proxy Status and SSL/TLS ModesSet up Cloudflare correctly: proxied vs DNS only records, what Off, Flexible, Full and Full (strict) SSL modes do, and how to choose the safe one for your site.7 मिनट पढ़ने में

गाइड · होस्टिंग और CDNDocker Website Down? A Step-by-Step Troubleshooting ChecklistDiagnose a dockerized website that is down: container state, exit codes, published ports, healthchecks, logs, reverse proxy upstreams, OOM kills and full disks.9 मिनट पढ़ने में

गाइड · होस्टिंग और CDNFix ERR_TOO_MANY_REDIRECTS on a Cloudflare SiteWhy Cloudflare sites hit redirect loops and how to fix them: Flexible SSL with an HTTPS-forcing origin, www rules, CMS URL settings, and conflicting redirect rules.7 मिनट पढ़ने में

गाइड · होस्टिंग और CDNHosting in India vs Abroad: What It Means for Speed and UptimeShould your server be in India, Singapore, the US or Europe? How distance affects latency, when a CDN solves it, and how to measure your own audience.6 मिनट पढ़ने में

गाइड · होस्टिंग और CDNHow to Change Nameservers Without Downtime (Step-by-Step)Switch DNS providers safely: copy the zone first, compare answers, handle DNSSEC and email records, change nameservers at the registrar, and verify with dig.8 मिनट पढ़ने में

गाइड · होस्टिंग और CDNHow to Choose Web Hosting for Uptime: What to Check Before You BuyA practical checklist for evaluating hosts on reliability: reading the SLA fine print, support quality, backups, resource limits, and how to test a host before you commit.7 मिनट पढ़ने में

गाइड · होस्टिंग और CDNHow to Find Out Who Hosts a Website (Step by Step, Free)Learn how to tell who hosts any website using free tools: IP address, nameservers, headers and CDN clues, and how to read confusing results like Cloudflare.7 मिनट पढ़ने में

गाइड · होस्टिंग और CDNHow to Migrate a Website to a New Host Without DowntimeA step-by-step website migration plan: lower TTLs, build and test on the new server with a hosts file, cut over safely, protect email records, and keep a rollback path.8 मिनट पढ़ने में

गाइड · होस्टिंग और CDNLoad Balancer Health Checks: Endpoints, Thresholds and Connection DrainingDesign load balancer health checks that remove bad servers quickly without flapping: health endpoint design, intervals and thresholds, HAProxy and nginx examples, and draining.8 मिनट पढ़ने में

गाइड · होस्टिंग और CDNnginx 502 and 504 Errors: Timeout, Buffer and Keepalive TuningTune nginx for 502 and 504 errors with the right directives: proxy_read_timeout, fastcgi_read_timeout, buffer sizes, upstream keepalive, and how to read the error log.8 मिनट पढ़ने में

गाइड · होस्टिंग और CDNVPS vs Shared Hosting: Which Is More Reliable for Your Website?Compare shared hosting and VPS on reliability: resource isolation, noisy neighbors, failure modes, who maintains what, and when moving to a VPS actually reduces downtime.7 मिनट पढ़ने में

DNS और डोमेन

गाइड · DNS और डोमेनCNAME at the Apex Domain: Why It Fails and How Flattening Fixes ItWhy you cannot put a CNAME on your root domain, and how ALIAS, ANAME and CNAME flattening work, with provider examples, trade-offs and verification commands.8 मिनट पढ़ने में

गाइड · DNS और डोमेनDNS Explained for Website Owners: Records, TTL and Safe ChangesLearn what each DNS record type does, how resolvers and authoritative servers differ, and how to change records safely with a lowered TTL and dig checks.9 मिनट पढ़ने में

गाइड · DNS और डोमेनDNS Records Cheat Sheet: A, AAAA, CNAME, MX, TXT, NS, CAAA practical DNS records reference: table of A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV and PTR with zone-file examples, dig commands and common mistakes.8 मिनट पढ़ने में

गाइड · DNS और डोमेनDNS TTL Explained: Values, Caching and Planning DNS ChangesWhat DNS TTL means, how resolvers cache records, typical TTL values, and a step-by-step plan for lowering TTL before migrations so changes take effect fast.8 मिनट पढ़ने में

गाइड · DNS और डोमेनDNSSEC Explained: Chain of Trust, DS Records and Safe DeploymentUnderstand how DNSSEC signs DNS answers, what DNSKEY, DS and RRSIG records do, why misconfiguration causes SERVFAIL, and how to enable it or roll keys safely.9 मिनट पढ़ने में

गाइड · DNS और डोमेनDomain Expiry, Grace and Redemption Periods: Protect Your DomainUnderstand the domain lifecycle from active to pending delete, why grace and redemption lengths vary by TLD and registrar, and how to avoid losing a domain.9 मिनट पढ़ने में

गाइड · DNS और डोमेनExpired Domain Recovery: Get Your Domain and Website BackA practical plan for recovering an expired domain: identify the stage, renew or redeem it, restore DNS, email and SSL, and prevent a repeat.8 मिनट पढ़ने में

गाइड · DNS और डोमेनHow Long Does DNS Propagation Take? What Actually Controls ItDNS changes are not pushed across the internet. Learn how caches, TTL and negative caching decide when you see an update, and how to verify with dig.8 मिनट पढ़ने में

गाइड · DNS और डोमेनHow to Change DNS on Indian ISPs and Routers (Jio, Airtel, BSNL)Step-by-step DNS changes for Windows, macOS, Android, iPhone and home routers on Indian broadband, plus how to test the change and roll it back safely.7 मिनट पढ़ने में

गाइड · DNS और डोमेनHow to Check Domain Expiry Date and Owner (WHOIS, Step by Step)Find out when a domain expires, who registered it and which company manages it. Includes how to read WHOIS results and what to do when the owner is hidden.7 मिनट पढ़ने में

गाइड · DNS और डोमेनHow to Transfer a Domain Between Registrars Without DowntimeStep-by-step domain transfer guide: unlock, auth/EPP code, the 60-day rule, WHOIS and DNS continuity, timelines, common blockers and how to avoid downtime.8 मिनट पढ़ने में

गाइड · DNS और डोमेनSubdomain Takeover and Dangling DNS: How to Find and Fix ThemDangling CNAME and A records can let attackers claim your subdomains. Learn how takeovers work, how to audit your DNS, and how to prevent them with policy.9 मिनट पढ़ने में

गाइड · DNS और डोमेनWebsite Blocked in India or Just Down? How to Tell the DifferenceLearn how ISP-level DNS, IP and SNI blocking differ from a real outage, which signs to look for, and how to diagnose with our tools without bypassing the law.7 मिनट पढ़ने में

ईमेल

गाइड · ईमेलBIMI Explained: Show Your Logo in the Inbox (Requirements and Setup)What BIMI is, what it requires (DMARC enforcement, SVG Tiny PS logo, VMC or CMC certificate), how the DNS record looks, and which mailbox providers display it.6 मिनट पढ़ने में

गाइड · ईमेलCheck Your Email Domain Setup (MX, SPF, DKIM, DMARC) in 15 MinutesA beginner's walkthrough to check that your business email domain has the right MX, SPF, DKIM and DMARC records, with free tools and plain-language fixes.7 मिनट पढ़ने में

गाइड · ईमेलDKIM Setup and Troubleshooting: Selectors, Key Length, RotationHow DKIM selectors and keys work, how to publish and test a record, choose key length, rotate safely, and diagnose the common reasons dkim=fail shows up.7 मिनट पढ़ने में

गाइड · ईमेलDMARC Rollout: From p=none to quarantine to reject, SafelyA staged DMARC rollout plan: publish p=none, read rua reports, fix alignment, ramp pct, set a subdomain policy with sp=, and reach p=reject without losing mail.7 मिनट पढ़ने में

गाइड · ईमेलEmail Blacklist Removal Guide: Find the Cause, Get Delisted, Stay CleanLearn how DNS blocklists work, how to check IP and domain listings, fix the root cause first, request delisting, and prevent repeat listings on your mail server.8 मिनट पढ़ने में

गाइड · ईमेलEmail Bounce Codes Explained: 4xx vs 5xx and Enhanced Codes (5.1.1, 5.7.1)Decode SMTP reply codes and enhanced status codes in bounce messages: temporary 4xx versus permanent 5xx, what 5.1.1, 5.7.1, 5.4.1 and others mean, and what to fix.7 मिनट पढ़ने में

गाइड · ईमेलEmail Going to Spam? A Step-by-Step Diagnostic ChecklistWork through authentication, blocklists, reverse DNS, sending reputation and content to find out why your email lands in spam, and what to fix first.6 मिनट पढ़ने में

गाइड · ईमेलFix SPF "Too Many DNS Lookups" (Permerror): Count, Trim and FlattenYour SPF record can only trigger 10 DNS lookups. Learn what counts, how to count them, and how to fix a permerror by pruning, splitting and flattening.8 मिनट पढ़ने में

गाइड · ईमेलGoogle Workspace DNS Records: MX, SPF, DKIM and DMARC SetupThe DNS records a Google Workspace domain needs for working, authenticated email: MX, SPF include, DKIM key, DMARC, and how to verify each one.6 मिनट पढ़ने में

गाइड · ईमेलMicrosoft 365 DNS Records: MX, SPF, Autodiscover, DKIM and DMARCThe DNS records Microsoft 365 and Exchange Online need for mail flow and authentication: MX token, SPF include, Autodiscover, DKIM CNAMEs and DMARC.6 मिनट पढ़ने में

गाइड · ईमेलMTA-STS and TLS-RPT Guide: Enforce TLS for Inbound EmailHow to set up MTA-STS and TLS-RPT: the DNS TXT records, the policy file on mta-sts.example.com, testing, enforce mode, and how to read TLS reports.6 मिनट पढ़ने में

गाइड · ईमेलMX Records Explained: Priority, Backup Servers and Null MXWhat MX records do, how priority works, why backup MX servers are risky, the rules for targets, and how to publish a null MX for domains that never receive mail.7 मिनट पढ़ने में

गाइड · ईमेलReverse DNS (PTR) for Email: Why It Matters and How to Set It UpHow PTR records and forward-confirmed reverse DNS affect email delivery, how to check them with dig, and how to set matching rDNS, HELO and A records.6 मिनट पढ़ने में

गाइड · ईमेलSPF, DKIM and DMARC Explained: A Complete Setup and Rollout GuideSet up SPF, DKIM and DMARC correctly, understand alignment, move safely from p=none to reject, and read reports without breaking legitimate mail.8 मिनट पढ़ने में

गाइड · ईमेलTransactional Email DNS Checklist: Subdomain, Return-Path, DKIM, TrackingThe DNS setup for sending transactional email through a provider: a dedicated subdomain, return-path CNAME, DKIM, SPF, DMARC alignment and a tracking domain.7 मिनट पढ़ने में

गाइड · ईमेलWarming Up a New Email Domain or IP: An Honest GuideHow to build sending reputation for a new domain or IP: set up authentication first, start small with engaged recipients, ramp gradually, and what warm-up services can and cannot do.6 मिनट पढ़ने में

SSL और सुरक्षा

गाइड · SSL और सुरक्षाContent Security Policy (CSP) Guide: Directives, Nonces, RolloutBuild a Content Security Policy that works: key directives, nonces and strict-dynamic, Report-Only rollout, violation reports, and fixes for common breakage.7 मिनट पढ़ने में

गाइड · SSL और सुरक्षाCookie Flags Explained: Secure, HttpOnly and SameSiteWhat the Secure, HttpOnly, SameSite, Domain, Path and cookie prefix attributes do, how to set them in common stacks, and how to debug cookies that go missing.7 मिनट पढ़ने में

गाइड · SSL और सुरक्षाHow to Check an SSL Certificate Expiry Date (3 Easy Ways)Find out when your SSL certificate expires using a free online checker, your browser, or one command, and learn what to do if the date is close or has passed.7 मिनट पढ़ने में

गाइड · SSL और सुरक्षाHow to Renew an SSL Certificate and Automate It for GoodLearn the certificate lifecycle, automate renewals with certbot, Caddy or acme.sh, add reload hooks, test with a dry run and monitor expiry before users notice.9 मिनट पढ़ने में

गाइड · SSL और सुरक्षाHSTS Preload Guide: Requirements, Risks and How to SubmitLearn what the HSTS preload list is, the exact requirements, the risks of includeSubDomains, how to submit your domain safely, and why removal takes months.7 मिनट पढ़ने में

गाइड · SSL और सुरक्षाHTTP Security Headers Guide: HSTS, CSP, Referrer-Policy and MoreA practical guide to HSTS, CSP, X-Content-Type-Options, frame-ancestors, Referrer-Policy and Permissions-Policy, with nginx, Apache and Express examples.8 मिनट पढ़ने में

गाइड · SSL और सुरक्षाLet's Encrypt Renewal Failures: Certbot Debugging GuideWhy certbot renewals fail and how to fix them: http-01 and dns-01 challenges, firewalls, redirects, rate limits, timers, and the exact debug commands.8 मिनट पढ़ने में

गाइड · SSL और सुरक्षाMixed Content Warnings: How to Find and Fix HTTP Resources on HTTPSUnderstand active vs passive mixed content, hunt down http:// references in HTML, CSS, JS and databases, fix them with wp-cli or CSP, and verify the result.8 मिनट पढ़ने में

गाइड · SSL और सुरक्षाSSL Certificate Types Explained: DV, OV, EV, Wildcard and SANCompare DV, OV and EV certificates, wildcard and multi-domain (SAN) options, and learn what certificate lifetimes really are today and where they are heading.7 मिनट पढ़ने में

गाइड · SSL और सुरक्षाSSL/TLS Certificate Errors Explained: Causes, Diagnosis and FixesDecode browser errors like ERR_CERT_COMMON_NAME_INVALID and ERR_CERT_AUTHORITY_INVALID, diagnose them with openssl and curl, and fix each root cause.10 मिनट पढ़ने में

परफ़ॉर्मेंस

गाइड · परफ़ॉर्मेंसCore Web Vitals Guide: Improve LCP, INP and CLS Step by StepLearn what LCP, INP and CLS measure, how lab and field data differ, and the practical fixes for images, fonts, JavaScript and layout shifts.9 मिनट पढ़ने में

गाइड · परफ़ॉर्मेंसHow to Check Your Website Speed for Free (and What to Fix First)Test your website speed with free tools, understand the numbers in plain language, and fix the biggest problems first: images, hosting, scripts and caching.7 मिनट पढ़ने में

गाइड · परफ़ॉर्मेंसHow to Reduce Time to First Byte (TTFB): Measure and Fix ItBreak TTFB into DNS, connect, TLS and server time, measure each with a ready curl format string, then cut it with caching, query tuning and a CDN.9 मिनट पढ़ने में

गाइड · परफ़ॉर्मेंसHTTP/2 and HTTP/3 Explained: What Changes and How to Enable ThemUnderstand multiplexing, QUIC and head-of-line blocking, when HTTP/2 and HTTP/3 actually help, and how to enable and verify them on nginx and Cloudflare.7 मिनट पढ़ने में

गाइड · परफ़ॉर्मेंसImage Optimization Guide: WebP, AVIF, Sizing, srcset, Lazy LoadingChoose between JPEG, PNG, WebP and AVIF, size images correctly, use srcset and lazy loading, and batch convert with cwebp, avifenc and sharp.6 मिनट पढ़ने में

गाइड · परफ़ॉर्मेंसWhy Is My Website Slow? A Step-by-Step Diagnosis FlowchartWork through DNS, connect, TLS, TTFB, download and render in order to find which stage makes your site slow, with the right tool and command for each.8 मिनट पढ़ने में

वेब की बुनियादी बातें

गाइड · वेब की बुनियादी बातेंHow to Read HTTP Headers for Beginners (What Each Line Tells You)Learn to view and read HTTP response headers with a free tool or curl, and what status, server, cache, redirect and security headers mean for your website.7 मिनट पढ़ने में

गाइड · वेब की बुनियादी बातेंHTTP Redirects Explained: 301, 302, 307, 308 and Fixing LoopsChoose between 301, 302, 307 and 308, canonicalize http, https and www, avoid chains and loops, and test every hop with curl. With nginx and Apache examples.8 मिनट पढ़ने में

गाइड · वेब की बुनियादी बातेंJio or Airtel Broadband: Some Websites Not Opening? Fix ItInternet works but one site will not open on Jio, Airtel or another Indian ISP? Learn how to tell a DNS, IPv6, router or site problem and fix each.6 मिनट पढ़ने में

गाइड · वेब की बुनियादी बातेंrobots.txt and XML Sitemap Guide: Syntax, Limits and MistakesWrite a correct robots.txt, understand Allow and Disallow precedence, noindex versus disallow, and build XML sitemaps within the 50,000 URL and 50 MB limits.8 मिनट पढ़ने में

गाइड · वेब की बुनियादी बातेंWebsite Owner Monthly Health Checklist (30 Minutes, Free Tools)A 30-minute monthly routine for small-business website owners: check uptime, SSL, domain, DNS, email, speed, backups and links with free tools and clear steps.7 मिनट पढ़ने में

गाइड · वेब की बुनियादी बातेंWhy Government Websites Slow Down at Deadlines (and How to Cope)Why busy-season traffic overwhelms tax, booking and ID portals, what is happening behind the error pages, and practical habits that reduce failed attempts.7 मिनट पढ़ने में