DNS Settings

DNS records control how your domain behaves — where your website points, where e-mail goes, and other services. CoreSynth web hosting uses server webhosting.coresynth.io.

Overview

DNS Record Types

CNAME record (recommended)

CNAME redirects one domain to another.

Advantages:

• Automatically updates when IP changes
• Simpler management

A record (alternative)

A record points a domain directly to an IP address.

Note: Server IP address is in your welcome e-mail or in your dashboard.

E-mail Records

MX record

MX record specifies where e-mail for your domain should be delivered.

SPF record

SPF record specifies which servers can send e-mail from your domain.

Value explanation:

• v=spf1 — SPF version
• a — allow sender’s A record
• mx — allow MX servers
• ~all — softfail (mark invalid e-mails, don’t reject)

Managing DNS in Panel

CoreSynth panel allows full DNS record management directly in the interface.

Creating DNS Zone

1. Log in to CoreSynth Dashboard 
2. Go to Web Hosting
3. Select your hosting package
4. Click DNS in sidebar
5. Click Create DNS Zone
6. Enter domain and IP address
7. Set nameservers:

ns1.coresynth.io
ns2.coresynth.io

8. Click Create

Note: DNS zone is automatically created when adding a domain with automatic DNS enabled.

Adding DNS Record

1. In DNS zones list click on domain
2. Click Add Record
3. Fill in:

4. Click Save

Record Types

Editing Record

1. In records list click Edit
2. Change values
3. Click Save

Deleting Record

1. In records list click Delete
2. Confirm deletion

Deleting DNS Zone

Warning: Deleting DNS zone removes all DNS records for the domain.

1. In DNS zones list click Delete Zone
2. Confirm deletion

Example Setup

Basic Web Hosting

Type    Name     Value                      TTL
A       @        [server IP address]        3600
CNAME   www      @                          3600
MX      @        webhosting.coresynth.io   3600  10
TXT     @        v=spf1 a mx ~all           3600

With E-mail

Type    Name            Value                      TTL
A       @               [server IP address]        3600
CNAME   www             @                          3600
MX      @               webhosting.coresynth.io   3600  10
TXT     @               v=spf1 a mx ~all          3600
TXT     default._domainkey  [DKIM key]            3600

With Subdomains

Type    Name     Value                      TTL
A       @        [server IP address]        3600
CNAME   www      @                          3600
A       blog     [server IP address]        3600
A       shop     [server IP address]        3600

DNS Setup at Registrar

If not using CoreSynth nameservers, configure DNS records at your domain registrar.

Option 1 — Nameservers (Recommended)

Set nameservers at registrar:

ns1.coresynth.io
ns2.coresynth.io

Then manage DNS records in CoreSynth panel.

Option 2 — External DNS

If using external DNS provider, add records:

Note: Server IP address is in your welcome e-mail or dashboard.

How to Change DNS at Registrar

1. Log in to your domain registrar
2. Navigate to domain management
3. Find Nameservers or DNS section
4. Change nameservers to CoreSynth or add records
5. Save changes

Note: Propagation may take up to 48 hours.

Using Proxy (Cloudflare, etc.)

If using DNS proxy like Cloudflare:

1. Set SSL mode to Full or Full Strict
2. For SSL issues, temporarily disable proxy
3. Ensure DNS records point to correct IPs

Verifying DNS

Online tools

• dnschecker.org  — global DNS check
• whatismyip.com  — DNS lookup

Command line

# Check A record
nslookup your-domain.com
 
# Check MX record
nslookup -type=MX your-domain.com
 
# Check SPF record
nslookup -type=TXT your-domain.com

DNS Propagation

DNS changes do not take effect immediately. Different networks update cache at different intervals.

Note: If website is not working after 48 hours, check DNS settings at your registrar.

Troubleshooting

Page not displaying

Cause: Incorrect A record or DNS not yet propagated.

Solution:

1. Verify A record at dnschecker.org 
2. Check A record points to correct IP
3. Wait for full propagation (up to 48 hours)

SSL not working

Cause: Cloudflare proxy blocking SSL verification.

Solution:

1. In Cloudflare, go to SSL/TLS → Overview
2. Change mode to Full or Full strict
3. Temporarily disable proxy (orange cloud → grey cloud)

E-mails not arriving

Cause: Incorrect MX record or SPF settings.

Solution:

1. Verify MX record: nslookup -type=MX your-domain.com
2. Add or correct SPF record
3. Check SPAM folder

Next Steps

• Web Hosting — Full hosting overview
• Domains — Domain management
• Databases — MySQL and PostgreSQL

Need help? Open a support ticket  or ask Alex in your dashboard.