Articles infrastructure

The Infrastructure Decisions You Make at Startup Will
Cost You or Save You at Scale

The Domain Name System  DNS  is among the most foundational and most overlooked components of Nigerian business digital infrastructure. It is the system that translates the human-readable domain name of your website into the numerical IP address that computers use to locate your server. When a visitor types your website address into their browser, a DNS query resolves your domain to the correct server address before the first byte of your website is delivered. When you send an email from your business domain, DNS records verify that your email server is authorised to send on behalf of that domain. Every element of your business’s online presence  website, email, subdomains, cloud services  depends on DNS configuration being correct. And yet most Nigerian businesses have never consciously managed their DNS.

What Incorrect DNS Costs Nigerian Businesses

DNS misconfiguration is a deceptively common and disproportionately consequential source of business digital problems in Nigeria. An incorrectly configured MX record  the DNS record that directs email to the correct mail server  results in business email being undeliverable, often without the sender receiving a clear error message. An incorrectly configured A record  the record that points a domain to the correct web server  results in the website being inaccessible. And an absent or incorrectly configured SPF or DKIM record  the records that authenticate the business’s email as legitimate  results in business emails being classified as spam by recipients’ email providers, invisibly destroying email communication that the sender believes is being delivered.

DNS and Email Deliverability

Email deliverability  the reliable arrival of business emails in recipients’ inboxes rather than spam folders  is heavily dependent on three DNS records that most Nigerian businesses have never configured correctly. SPF  Sender Policy Framework  specifies which servers are authorised to send email on behalf of your domain, helping recipient systems distinguish legitimate messages from spoofed ones. DKIM  DomainKeys Identified Mail  adds a cryptographic signature to outgoing emails that allows recipient systems to verify that the message was sent by an authorised server and was not modified in transit. And DMARC  Domain-based Message Authentication, Reporting, and Conformance  builds on SPF and DKIM to specify how recipient systems should handle messages that fail authentication. Without all three correctly configured, Nigerian business emails are vulnerable to spam classification and their domain is vulnerable to being spoofed in phishing attacks.

DNS Security Considerations

DNS infrastructure is also an attack surface that requires deliberate security management. DNS hijacking  where an attacker modifies DNS records to redirect website traffic or email to malicious servers  is a known attack type that has affected Nigerian businesses and their customers. DNSSEC  DNS Security Extensions  provides a layer of cryptographic verification that protects against DNS record tampering. And the security of the registrar account that controls DNS records  the account where domain registration and DNS management occur  requires the same strong credential and MFA practices as any other critical business account.

How E15 Manages DNS Infrastructure

E15 Technologies Limited’s Infrastructure and Support service includes DNS audit and management for clients whose DNS configuration requires verification, correction, or ongoing maintenance. Our DNS audit reviews all records associated with your domain  verifying that website, email, and any cloud service DNS configuration is correct, complete, and optimally configured for deliverability and security. Where misconfiguration exists, we correct it with a systematic understanding of the dependencies between records. Contact our Infrastructure and Support team today to discuss a DNS audit for your business.

Conclusion

DNS controls your website, your email, and your entire online presence. E15 Technologies Limited ensures it is configured to the standard your business requires. Contact us today.

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