---
title: "Constant Contact SPF Record: How To Set Up And Verify It | DuoCircle"
description: "Learn how to set up and verify a Constant Contact SPF record to improve email authentication, strengthen email security, and support better deliverability."
image: "https://www.duocircle.com/images/og-default.png"
canonical: "https://www.duocircle.com/blog/constant-contact-spf-record-setup-and-verification-guide/"
---

Quick Answer

Learn how to set up and verify a Constant Contact SPF record to authorize email sending, improve deliverability, prevent spoofing, and strengthen email security. Follow simple DNS configuration and verification steps to ensure your SPF record is accurate and properly aligned with your domain.

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![Constant Contact SPF](https://media.mailhop.org/duocircle/smtp-relay-1161-1788951356758.jpg) 

Setting up a Constant Contact SPF record is an important step toward improving email authentication, protecting your domain from spoofing, and supporting reliable email deliverability. SPF (Sender Policy Framework) allows receiving mail servers to verify whether Constant Contact is authorized to send messages on behalf of your domain.

However, simply adding an SPF record is not enough—you also need to ensure that it is correctly configured, works alongside DKIM and DMARC, and does not conflict with existing email services. In this guide, we’ll explain what a Constant Contact SPF record is, how to add it to your DNS, how to verify the configuration, and how to troubleshoot common SPF and DNS issues.

## What a Constant Contact SPF Record Is and Why It Matters

A Constant Contact SPF record is a DNS TXT entry that tells receiving mail servers that Constant Contact is allowed to send email on behalf of your sending domain. SPF, or sender policy framework, is one part of email authentication, alongside **DKIM authentication** and a DMARC record. _Together, these controls help mailbox providers such as Google, Yahoo, and Microsoft decide whether a message is legitimate, suspicious, or likely to be rejected._

When you send newsletters, automations, event invitations, or other digital marketing campaigns through Constant Contact, your [domain reputation](https://www.activecampaign.com/blog/domain-reputation) matters. A properly configured SPF record supports email deliverability by reducing the chance that your campaigns are flagged as unauthenticated email, spam, or forged mail.![Sendgrid Alternative 1612](https://media.mailhop.org/duocircle/sendgrid-alternative-1612-1788951791805.jpg)

### How SPF Supports Your Sending Domain

SPF authentication works by comparing the sending mail server against the **SPF policy published** in your DNS settings. If the mail server is included in your SPF record, the message can pass the SPF check. If it is not included, the receiving [mailbox provider](https://en.wikipedia.org/wiki/Mailbox%5Fprovider) may treat the message as suspicious.

For Constant Contact, this usually means updating your existing SPF DNS entry to include Constant Contact’s approved sending infrastructure. The exact SPF include value may depend on your Constant Contact product, account configuration, or guidance shown in your Email Settings or domain authentication screen.

### How SPF Works with DKIM Authentication and DMARC

SPF is important, but it is not the only requirement for **strong email authentication**. DKIM authentication adds a cryptographic signature to your messages, while a DMARC record tells receiving systems what to do when SPF or DKIM fails. A DMARC record also helps with phishing protection and protects your brand from [email spoofing](https://thehackernews.com/2017/12/email-spoofing-client.html).

_In Constant Contact, domain authentication may require CNAME records for DKIM._ A CNAME (Canonical Name) record points one DNS hostname to another. Depending on your Constant Contact account and authentication setup, the platform may provide DKIM-related CNAME records that you need to add to your DNS. Always use the exact hostnames and target values provided in your Constant Contact account.

#### SPF vs. DKIM Alignment

SPF can authorize a sending mail server, but DMARC can authenticate a message through either **SPF alignment or DKIM alignment**. Using DKIM alongside SPF provides an additional authentication path and can help maintain DMARC alignment when forwarding or other mail-flow changes affect SPF.

## Before You Start: Check Your Existing DNS and Email Authentication Setup

Before editing your DNS settings, identify where your DNS is managed. Your domain registrar and your DNS hosting provider are not always the same company. For example, your domain may be registered at GoDaddy, NameCheap, Network Solutions, or Bluehost, while your DNS settings are hosted in Cloudflare, DNSimple, EasyDNS, or HostGator.

### Find Your DNS Provider and Current Records

Log in to your domain registrar or hosting provider and open the DNS settings for your sending domain. Look for TXT, CNAME, MX, and other **resource record types**. If you are unsure where your authoritative DNS lives, use an MX Lookup, WHOIS lookup, or DNS lookup tool such as MxToolBox.

You should confirm:

- Which platform controls your DNS settings
- Whether an SPF record already exists
- Whether DKIM authentication has already been configured
- Whether a DMARC record exists at \_dmarc.yourdomain.com
- Whether Constant Contact domain verification is already pending or complete![SMTP Email 1613](https://media.mailhop.org/duocircle/smtp-email-1613-1788951895110.jpg)

### Audit Your Existing Email Authentication

Your domain may already send mail through Google Workspace, Microsoft 365, a CRM, a help desk, or another **email marketing platform**. Sales Managers and [Digital Marketing](https://business.adobe.com/blog/basics/digital-marketing) teams often use multiple tools, so your SPF configuration needs to authorize each legitimate sender without creating duplicate SPF records.

Check your current DNS record for SPF. It usually starts with:

```

v=spf1
```

If you see more than one SPF record for the same root domain, that is a problem. SPF requires one SPF policy per domain or subdomain. Multiple SPF records can cause SPF authentication to fail.

#### Identify Your Current SPF Policy

A basic SPF record might look like this:

```

v=spf1 include:_spf.google.com ~all
```

If you need to add Constant Contact, you typically update the existing SPF record instead of creating a second one. Your **final SPF configuration** may contain an SPF include for Google, Constant Contact, and any other approved [mail server](https://www.techtarget.com/whatis/definition/mail-server-mail-transfer-transport-agent-MTA-mail-router-Internet-mailer) services you use.

## How to Add Constant Contact to Your SPF Record

To add Constant Contact to your SPF record, open your DNS settings and edit the existing TXT record that begins with v=spf1\. If you do not already have an SPF record, create a new TXT record for the sending domain.

### Update the Existing SPF Record

A typical SPF DNS entry that includes Constant Contact may look similar to:

```

v=spf1 include:spf.constantcontact.com ~all
```

If you already use [Google Workspace](https://jumpcloud.com/blog/what-is-google-workspace), your SPF record might look more like:

```

v=spf1 include:_spf.google.com include:spf.constantcontact.com ~all
```

Always follow the exact value provided by **Constant Contact** in your account, especially if you are using Lead Gen & CRM, rebranding links, custom tracking domains, or a dedicated sending domain. _In some accounts, the configuration tool may emphasize DKIM authentication and CNAME records more than SPF because Constant Contact handles some SPF authentication through its own bounce or return-path domains._

#### SPF Include and Lookup Limits

SPF has a 10-DNS-lookup limit. Every SPF include can trigger additional DNS lookups. If your SPF record includes too many third-party senders, [SPF lookup failures](https://www.duocircle.com/blog/spf-lookup-failure-troubleshooting-why-your-spf-record-breaks-and-how-to-fix-it/) can occur even if the syntax appears valid. Run an SPF lookup or SPF check after editing your DNS settings to confirm your SPF status.![SMTP Server Mail 1614](https://media.mailhop.org/duocircle/smtp-server-mail-1614-1788952047573.jpg)

### Add Related CNAME Records for DKIM and Domain Verification

In addition to the SPF record, Constant Contact may ask you to add **CNAME records** for DKIM authentication, domain verification, email tracking, link safelabeling, or rebranding links. A CNAME record is a canonical name record, meaning it aliases one hostname to another hostname.

Examples may include:

- `*s1._domainkey*.yourdomain.com` pointing to a Constant Contact DKIM key target
- `*s2._domainkey*.yourdomain.com` pointing to another DKIM key target
- An `em` record for email tracking or branded links
- A `cal` record for calendar or **campaign-related services**
- Owner CNAME or Link CNAME records in Lead Gen & CRM or SharpSpring-style setups

To add CNAME entries, choose CNAME as the DNS record type, enter the host/name exactly as provided, and paste the canonical name target into the value field. Do not add extra spaces, quotation marks, or your full domain twice if your DNS provider automatically appends it.

#### Where to Find the Required Values

In Constant Contact, check areas such as Email Settings, Company Email Settings, DKIM & Sending Domains, or your **domain verification workflow**. You may see prompts to verify domain ownership, set up DKIM, or setup DNS for authenticated email. Copy the provided SPF record, DKIM key, and CNAME records exactly.

## How to Verify Your Constant Contact SPF Record Is Working

After updating your DNS settings, wait for propagation. Some DNS verification checks succeed within minutes, while others may take several hours depending on [Time-To-Live(TTL)](https://www.f5.com/glossary/time-to-live-ttl), your hosting provider, and your Domain Name System configuration.

### Use Constant Contact Record Verification

Return to Constant Contact and run record verification from the **domain authentication screen**. If the platform can verify domain ownership and detect the required CNAME records, DKIM authentication should move toward an authenticated or verified status. If the SPF record is required for your setup, Constant Contact may also show SPF status or provide setup guidance.

For Lead Gen & [CRM(Customer Relationship Management)](https://www.investopedia.com/terms/c/customer%5Frelation%5Fmanagement.asp) users, check the relevant domain verification, DKIM & Sending Domains, or Company Email Settings area. If you migrated from SharpSpring, review any existing Owner CNAME, Link CNAME, em record, or cal record before deleting or replacing DNS entries.

### Confirm with External DNS Tools

Use MxToolBox, Google Admin Toolbox, or another DNS verification utility to run:

- SPF lookup
- SPF check
- TXT lookup
- **CNAME lookup**
- DMARC record lookup
- MX Lookup

These tools can confirm whether the SPF record resolves publicly, whether your CNAME records point to the right canonical name targets, and whether your DMARC record is visible.![Hosted Email Server 1615](https://media.mailhop.org/duocircle/hosted-email-server-1615-1788952084536.jpg)

### Send a Real-World Test

After record verification, send a test campaign to Gmail, Yahoo, and other mailbox provider accounts. Open the message headers and look for **SPF, DKIM, and DMARC** results. Ideally, you should see SPF pass, DKIM authentication pass, and DMARC pass or align. _This confirms that your sending domain is properly authenticated and that Constant Contact is authorized in your SPF policy._

## Common SPF Setup Mistakes and How to Fix Them

SPF problems are usually caused by small DNS settings errors. Fortunately, most are easy to correct once you know what to look for.

### Mistake 1: Creating Multiple SPF Records

Do not create **separate SPF records** for Google, Constant Contact, and other services. A domain should have one SPF record. Combine approved senders into a single SPF policy:

```

v=spf1 include:_spf.*google*.com include:*spf*.constantcontact.com ~all
```

Then run an SPF lookup to confirm the SPF DNS entry is valid.

### Mistake 2: Entering CNAME Records Incorrectly

CNAME records must be entered exactly as provided. If Constant Contact gives you`*s1._domainkey*`, do not accidentally enter`*s1._domainkey*.yourdomain.com.yourdomain.com.` This is a common issue with GoDaddy, HostGator, NameCheap, EasyDNS, Network Solutions, DNSimple, Bluehost, and Cloudflare because each **DNS interface** handles hostnames slightly differently.

Remember: CNAME stands for canonical name. The host points to a canonical name target supplied by Constant Contact. If the canonical name value is incorrect, [DKIM authentication](https://www.duocircle.com/blog/email-security/dkim-authentication-explained-securing-your-email-with-verified-signatures/), domain verification, link safelabeling, or rebranding links may fail.

### Mistake 3: Ignoring DKIM and DMARC

An SPF record alone is not enough for modern email authentication. You should also set up DKIM authentication and **publish a DMARC record**. DKIM helps prove that the message was not modified in transit, while a DMARC record tells mailbox providers how to handle mail that fails authentication.

A simple monitoring DMARC record might look like:

```

v=DMARC1; p=none; rua=mailto:*dmarc*@yourdomain.com
```

Over time, you can move to **stricter DMARC policies** once you are confident that Constant Contact and your other mail server sources are properly authenticated.![Email Smtp Service 1616](https://media.mailhop.org/duocircle/email-smtp-service-1616-1788952267002.jpg)

### Mistake 4: Not Waiting for DNS Propagation

If Constant Contact cannot verify domain records immediately, do not assume the setup is wrong. DNS settings can take time to propagate across the **Domain Name System**. Wait, then rerun record verification and an external SPF check.

### Mistake 5: Exceeding SPF Lookup Limits

Too many SPF include mechanisms can cause SPF authentication failures. If your SPF configuration includes many platforms, review whether all senders are still active. Remove unused services, flatten cautiously if needed, and keep your SPF record maintainable. This strengthens [email security](https://www.duocircle.com/), protects email deliverability, and keeps your Constant Contact sending domain properly authorized.

![Brad Slavin](https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg) 

Brad Slavin 

General Manager

General Manager at DuoCircle. Product strategy and commercial lead across the email security portfolio.

## Secure your email infrastructure

Protect, authenticate, and deliver. Contact our team to find the right solution.

[Contact Sales](/contact/) [Explore Products](/products/) 

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