Evolved Office Email Authentication

To optimize your delivery results, it is important to set up authentication with your business domain provider. This process establishes your domain as a trusted sender, improves inbox placement, and protects your brand reputation. Please give this document to your IT provider or whoever manages your business domain.

Required CNAME Records

Please provide these records to your IT team or DNS manager. Setup should only take a few minutes.

a. Delivery Record (SPF)

Type: CNAME

Host Name: delivery

Value: eapi.sslworld.netcorecloud.net

b. Domain Key Record (DKIM)

Type: CNAME

Host Name: nc2048._domainkey

Value: dkim2048.world.netcorecloud.net

Once these are added, allow time for DNS propagation (usually within a few hours, sometimes up to 24–48 hours).

What These Records Do

Delivery Record (SPF): Basically a filter that, when attached to your business domain, specifies who can and cannot send through your business email. It adds additional protection from a potential spam sender from using your email domain to send unwanted emails to contacts (sometimes your own customer contacts). These emails can contain misinformation and, in some cases malware.

Here is a page explaining it more completely:
https://www.proofpoint.com/us/threat-reference/spf

Domain Key Record (DKIM): Basically DKIM (Domain Key Identified Mail) is a way to digitally sign an email. This tells the customer you are sending to that your email is authentic and has been sent on your behalf via our services.

Here is a page explaining it more completely:
https://www.proofpoint.com/us/threat-reference/dkim

DMARC (Recommended)

What is DMARC?
DMARC (Domain-based Message Authentication, Reporting & Conformance) is an additional security layer that works alongside SPF and DKIM. It tells receiving servers how to handle emails that fail authentication checks.

Policies include: do nothing, quarantine, or reject.

Reports: DMARC lets you receive detailed reports showing how your domain is being used, helping you identify misuse or attacks.

Here is a page with a complete explanation: Proofpoint – DMARC Reference

You can generate a record here: MXToolbox DMARC Generator

Domain Warm-Up

When a new domain is authenticated, it enters a warm-up phase.

Gradual Ramp-Up – Email sending volume starts small and increases daily.

Engagement is Key – Begin with your most engaged contacts. Good open and click rates speed up trust-building.

Full Sending Capacity – Typically reached within 3–4 weeks, assuming good engagement.

This process improves inbox placement and reduces the chance of being flagged as spam.

Important Notes

Temporary/Alias Sending Ends – All campaigns must now use your authenticated business domain. Alias or temporary domains are no longer supported.

Ongoing Benefits – Once authenticated and warmed up, your emails will have stronger deliverability, higher security, and better protection of your sender reputation.