Overview

Changing DNS can affect your email service depending on which DNS records are modified.

Email delivery is controlled by MX (Mail Exchange) records, along with supporting records such as SPF, DKIM, and DMARC. If these records are changed, removed, or not correctly configured, email service may be disrupted.

When Email Is NOT Affected

Email will continue to work normally if:

• MX records remain unchanged
• DNS updates only involve website-related records (e.g., A or CNAME)
• Existing email-related records (MX, SPF, DKIM, DMARC) are preserved

When Email CAN Be Affected

Email may be impacted if:

• Nameservers are changed and MX records are not recreated at the new DNS provider
• MX records are modified or removed
• SPF, DKIM, or DMARC records are missing or incorrect
• DNS is temporarily inconsistent during propagation

Common Scenarios

Updating A Record Only

• Affects website routing only
• Email remains unaffected

Changing Nameservers

• Transfers DNS authority to a new provider
• All DNS records (including MX) must be recreated
• Missing records can result in email disruption

Incorrect DNS Configuration

• Emails may bounce
• Emails may not be received
• Emails may be flagged as spam

DNS Propagation and Email

• DNS changes may take a few hours up to 24–48 hours to fully propagate
• During this time:
  • Some emails may still route using old DNS
  • Others may follow the new configuration

Best Practices (Client Guidance) 

Before making DNS changes:

• Ensure MX records are correctly configured
• Confirm SPF, DKIM, and DMARC records are present
• If changing nameservers, verify all email-related records are recreated at the new provider
• Plan changes during low email activity periods where possible

Common Client Issues

• “I’m not receiving emails” → MX records missing or incorrect
• “Emails are bouncing” → invalid or misconfigured MX records
• “Emails going to spam” → missing SPF/DKIM/DMARC
• “Email stopped after DNS change” → records not replicated

Suggested Response Snippet 

Changing DNS can affect your email if email-related records (such as MX, SPF, or DKIM) are modified or not correctly configured. If these records remain unchanged, your email service will continue to work normally. If you are changing nameservers, please ensure all email records are recreated at the new provider to avoid any disruption. Please allow up to 24–48 hours for DNS changes to fully propagate.