Domain Technical Setup

title: Domain Technical Setup
description: >-
Set up SPF, DKIM, and DMARC records to authenticate your domain and improve
inbox placement.

Overview

Configure SPF, DMARC, and DKIM records to improve email deliverability and inbox placement.

Prerequisites

• Custom domain (not free email providers like Gmail, Yahoo, etc.)
• Access to your domain's DNS settings
• Active email service provider (ESP) account

Note: Skip this setup if you're using a free email address (e.g., @gmail.com, @yahoo.com).

Add SPF Record

SPF verifies which servers can send email on behalf of your domain.

1. Identify your ESP from the table below.
2. Copy the corresponding Value.
3. Create a TXT record in your DNS with that value.

Tip: If you use multiple services, combine them: v=spf1 include:_spf.google.com include:sendgrid.net ~all

Add DMARC Record

DMARC tells email providers how to handle messages that fail SPF/DKIM checks.

1. Go to DMARC Generator or similar tool.
2. Enter your Domain.
3. Click Submit.
4. Click Finish.
5. Copy the generated DMARC value.
6. In your DNS, create a TXT record with the copied DMARC value.

Add DKIM Record

DKIM adds a digital signature to verify email authenticity.

1. Generate DKIM in your ESP (Google Workspace, Microsoft 365, Zoho Mail, etc.).
2. Copy the DKIM public key and selector name provided by your ESP.
3. In your DNS, create a TXT record:

• Name/Host: Your DKIM selector (e.g., google._domainkey or selector1._domainkey).
• Value: The DKIM public key from your ESP.

Note: Contact your ESP directly if you need help generating DKIM. The record name and value depend on your provider.

Verify Your Setup

DNS changes can take up to 24 hours to propagate worldwide.

1. Use a DNS lookup tool (e.g., MXToolbox, Google Admin Toolbox).
2. Check that SPF, DMARC, and DKIM records are visible.

Frequently Asked Questions

DKIM is set properly but SalesBlink is not recognizing it?

SalesBlink ensures DKIM by using the identifier. First, find your DKIM identifier from your DNS records. It is generally what comes in the Name/Value field right before the first dot (.).

In the above example, “google” is the DKIM identifier.

To set your DKIM Identifier on SalesBlink:

1. Head over to Email Senders.
2. Bulk select all the senders which share the same DKIM identifier.
3. Click on “Sender Settings”.

4. Uncheck other settings & enter your DKIM identifier.

5. Click Save.
6. In the next 24 hours, SalesBlink will automatically recheck your domain health and update your Domain Setup Report.

Updated on: 03/07/2026