How do I update my website DNS records without breaking my business email?
To launch a new website without disrupting company email infrastructure, update only the root A record or WWW CNAME record to point to the new web host's IP address. Never modify or delete your existing MX records, SPF records, or TXT records, as these explicitly dictate your Microsoft 365 or Google Workspace mail routing.
The single biggest mistake made during a new website launch is changing the primary domain nameservers (NS records) directly to a new website platform like Squarespace or Shopify. When you change nameservers blindly, you completely disconnect your domain from your existing DNS zone file. If that zone file holds the configurations for your corporate email, your mail servers will instantly go offline, rejecting incoming client communications.
To ensure absolute operational uptime for your business operations in Ottawa or remote environments, you must manage your DNS zone file with precision.
The Safe Migration Process
Map the New Target: Obtain the exact target IP addresses or canonical names (CNAME) provided by your new website platform.
Edit the Root A Record: Locate the record with the "@" host symbol in your current DNS manager and update its value to point to the new web host's IP address.
Edit the WWW CNAME Record: Update the "www" record to point to the required host verification string.
Leave Mail Infrastructure Untouched: Do not alter any record labeled MX, or any TXT records containing email verification strings like v=spf1.
By altering only the specific records that handle web traffic (HTTP/HTTPS), you seamlessly route visitors to your modern frontend while leaving your backend communication infrastructure fully isolated and online. If you want your next web deployment handled with professional IT precision, explore our comprehensive website creation services at Ottawa IT Expert.
