রাজশাহীতে নতুন ওয়েবসাইট লঞ্চ করতে গিয়ে সবচেয়ে বেশি confusion হয় DNS setup নিয়ে—কোন রেকর্ডটা কোথায় যাবে, propagation কতোক্ষণ, ইমেইল কেন ডেলিভার হচ্ছে না, SSL কেন লাল দেখাচ্ছে ইত্যাদি।
This article is your field-tested, Bangladesh-friendly, Rajshahi-ready guide—A, CNAME, MX, TXT (SPF/DKIM/DMARC), NS, AAAA সবকিছুর step-by-step solution, plus troubleshooting, SEO impact, security hardening, and 24/7 real-time support details from BD IT CENTER—Top-Rated Web Development Company in Bangladesh (and providers of Best Web Hosting in Bangladesh).
Need help right now? Live Chat / WhatsApp: +8801406666328
Rajshahi-based business owners launching a new site
Developers/marketers who need a precise DNS checklist
Anyone migrating domain, hosting, or email (Google Workspace/Zoho/Business Mail)
Domain → Server mapping: A/AAAA points your domain to server IP
Brand URLs: CNAME দিয়ে www বা subdomain map
Business Email: MX/TXT (SPF, DKIM, DMARC) ensures inbox delivery, not spam
Security & Trust: CAA/CAA record (optional), DNSSEC (where supported)
Performance: Low TTL + Anycast CDN (e.g., Cloudflare) for faster BD & Rajshahi users
Option A (Simple): Keep DNS at domain registrar (Namecheap, Porkbun, etc.)
Option B (Recommended): Use Cloudflare for CDN, security, and quick propagation
Option C: Use Hosting DNS (cPanel/WHM nameservers)
BD IT CENTER Tip: For Rajshahi traffic, Cloudflare (proxied) + BDIX-optimized hosting = visibly faster page loads.
| Record | Host/Name | Value (Example) | TTL | Purpose |
|---|---|---|---|---|
| A | @ | 203.0.113.25 (server IP) |
300–1800 | Points root domain |
| AAAA (optional) | @ | 2001:db8::abcd |
300–1800 | IPv6 support |
| CNAME | www | @ or yourdomain.com |
300–1800 | www → root |
| TXT (SPF) | @ | v=spf1 a mx include:_spf.provider.com ~all |
1800 | Authorize senders |
| MX | @ | mx1.provider.com (priority 10) |
1800 | Inbound email |
| MX | @ | mx2.provider.com (priority 20) |
1800 | Redundancy |
DKIM & DMARC (Must-Do for Email Delivery):
DKIM (TXT): Host: default._domainkey → Long DKIM key from your mail service
DMARC (TXT): Host: _dmarc → v=DMARC1; p=quarantine; rua=mailto:postmaster@yourdomain.com; pct=100
BD IT CENTER can generate & apply a clean SPF/DKIM/DMARC policy that balances deliverability + safety for Bangladeshi ISPs.
| Subdomain | Record | Value | Notes |
|---|---|---|---|
blog |
CNAME | ghs.google.com or your CMS host |
For Blogger/Headless CMS |
app |
A | 203.0.113.40 |
Point to app server |
cpanel |
CNAME | server.yourhost.com |
Quick access |
mail |
A/CNAME | Mail server host/IP | For webmail & IMAP/SMTP |
Update NS at registrar to Cloudflare/Hosting nameservers.
Wait propagation 5 min – 24 hrs (BD ISPs often settle within a few hours).
Enable AutoSSL (cPanel) or Cloudflare Universal SSL.
Add HSTS only when you’re sure everything works over HTTPS.
Consider DNSSEC (if registrar supports), especially for finance/education sites.
Site opens on some ISPs, not others:
Lower TTL to 300, verify A/AAAA correctness, confirm no stale DNS on local router/ISP.
Test via 1.1.1.1, 8.8.8.8, and local BD resolvers.
Email landing in spam:
SPF includes wrong vendor or multiple +all/?all misuse.
Fix: Single clean SPF, DKIM valid, DMARC p=quarantine (start), later p=reject.
Warmup + consistent sending IP/volume.
WWW works, root doesn’t (or vice-versa):
Missing CNAME/A symmetry.
Fix: Root on A/AAAA, www → CNAME @ (or same target in Cloudflare with orange-proxy).
Mixed content / No padlock:
Assets served via http://.
Fix: Force HTTPS, update CDN/origin URLs, enable “Always Use HTTPS” (Cloudflare), HSTS after testing.
Propagation taking too long:
Registrar NS not updated, or conflicting zone elsewhere.
Fix: Ensure single authoritative zone; flush caches.
Stuck? BD IT CENTER provides Emergency DNS Fix & Same-Day Go-Live in Rajshahi.
SPF/DKIM/DMARC correctly aligned → brand trust + inbox placement
Cloudflare WAF + DDoS → protection from common BD botnets/scrapers
Rate Limiting for admin routes (/wp-admin, /login)
DNSSEC (+CAA if you want to restrict CAs)
Zero-Trust email routing for transactional mail (Postmark/SES) with strict DMARC
Low TTL + Anycast ⇒ Faster TTFB for Rajshahi/Dhaka users
Consistent canonical hostname (www vs non-www) avoids duplicate indexing
HTTPS everywhere improves trust signals & Core Web Vitals
Uptime (via Cloudflare + BDIX-optimized hosting) ⇒ Better crawl frequency
Valid MX/SPF/DKIM/DMARC ⇒ Newsletter & outreach emails land inbox, improving CTR to site
Starter DNS Setup (One-Time): 990–1,990 BDT (single domain, basic A/CNAME/MX/TXT)
Business DNS + Email Authentication: 2,990–5,990 BDT (SPF/DKIM/DMARC + testing)
Cloudflare Hardening Pack: 3,990–8,990 BDT (WAF rules, page rules, caching, HTTPS)
Managed DNS (Monthly): 990–1,990 BDT (monitoring, edits, incident response)
Prices vary by complexity/vendor count. Get a quick quote on WhatsApp: +8801406666328.
We provide short DNS training (Bangla + English mix) for your team:
How to edit records safely
Rolling back mistakes
Email deliverability basics
Creating subdomains for campaigns
Reading DNS logs/analytics (Cloudflare)
If DNS hijack / NS tamper suspected, we lock & revert quickly
Snapshot/backup current zone, restore to last good state
Urgent MX & SPF fixes to restore email flow
Coordinate with registrar & hosting for security hold
WhatsApp/Phone: +8801406666328
Live Chat: Available via BD IT CENTER website
Email: hello@bditcenter.com (or your existing thread with us)
Top-Rated Web Development Company in Bangladesh
Best Web Hosting in Bangladesh with BDIX-optimized speed
Rajshahi-focused rollout with Dhaka ops backbone
End-to-end: Domain, DNS, Hosting, SSL, Email, Security, SEO—one team
Same-Day Go-Live & Emergency Fix options
Transparent pricing & training-first approach
“DNS setup done in under an hour—site live in Rajshahi without downtime.”
“Email finally reached Inbox after proper SPF/DKIM/DMARC—sales jumped.”
“Cloudflare + BDIX hosting = noticeably faster product pages for BD users.”
Q1. Propagation কতক্ষণ?
A. সাধারণত 5 মিনিট–4 ঘন্টা; কিছু ISP-তে 24 ঘন্টা লাগতে পারে. Lower TTL helps.
Q2. Google Workspace/Zoho MX কিভাবে বসাবো?
A. Their admin panel → copy MX & TXT; add in your DNS zone; remove old MX; set proper priority; verify.
Q3. www ছাড়া main domain কাজ করছে না কেন?
A. Root A record missing or wrong. Keep A @ set; www as CNAME @.
Q4. ইমেইল স্প্যামে যাচ্ছে কেন?
A. Misconfigured SPF/DKIM/DMARC. We fix and align domains + advise sending practices.
Q5. DNSSEC দরকার?
A. For finance/edu/gov-like trust—Yes (if registrar supports). We can enable & test.
Anchor text suggestion:
“DNS setup complete? Next build your Business Website in Rajshahi with our Custom Development and Ecommerce solutions.”
Rajshahi-based website? Make DNS bulletproof, email deliver, and pages load fast for Bangladesh. BD IT CENTER handles everything—A/CNAME/MX/SPF/DKIM/DMARC/Cloudflare/SSL—with training and 24/7 support.
Ready to go live today?
Call/WhatsApp: +8801406666328 • Start your project: BD IT CENTER (bditcenter.com)
Decide DNS control (Registrar / Cloudflare / Hosting)
Set A @ → server IP; CNAME www → @
Add MX (with correct priorities)
Add SPF TXT (single, clean policy)
Enable DKIM TXT from mail provider
Add DMARC TXT (start with p=quarantine)
Enable SSL (AutoSSL/Cloudflare), test HTTPS
(Optional) DNSSEC & CAA
Lower TTL during migration; raise after stable
Test: dig, nslookup, mail-tester, real inboxes
Document changes; share with your team
Need expert execution + training?
BD IT CENTER — Rajshahi & Nationwide
WhatsApp: +8801406666328 | Live Chat: bditcenter.com
Unique, trending, and BD-optimized content crafted for top ranking on Google in Bangladesh—covering DNS setup end-to-end with security, SEO, and local support.