Corporate Email Configuration: SPF Records and DKIM Signatures to Prevent Spam

Improve the deliverability and security of your business emails

Having a corporate email address like contacto@tuempresa.com is essential for your business’s credibility. However, setting up your email account isn’t enough if your quote or support emails end up in your customers’ spam folder. Modern email servers like Gmail or Outlook apply strict filters to verify the sender’s identity, so configuring your domain’s technical security is vital to ensuring that your messages are read.

What are SPF records and DKIM signatures?

The SPF (Sender Policy Framework) record is a text rule in your DNS settings that specifies which authorized servers are permitted to send emails on behalf of your domain name. On the other hand, the DKIM (DomainKeys Identified Mail) signature adds an encrypted digital signature to the headers of your outgoing messages, confirming that the email’s content has not been altered or forged while in transit over the internet, thereby verifying its authenticity.

How can you check if your security records are active?

Once the changes have been applied to the DNS zones, it’s a good idea to verify that the signatures are working correctly. You can use free, user-friendly online tools such as Mail-Tester or MXToolbox. These platforms provide you with a temporary email address to which you can send a test message from your corporate account. After receiving it, they analyze your email headers and display a detailed visual report showing whether your SPF and DKIM records are active and validated by global servers.

Additional Tips for Protecting Your Trays

In addition to SPF and DKIM, we recommend configuring DMARC, which tells receiving servers what to do if an email fails SPF or DKIM validation (for example, reject it or send it directly to quarantine). Also, avoid sending mass email newsletters from your daily corporate inbox; for large-scale marketing campaigns, it’s best to use specialized external services that won’t compromise the reputation of your primary domain.

Steps to Configure Authentication on Your DNS Servers

1. Log in to your domain manager: Log in to the control panel of your web domain provider or the hosting control panel where you manage your DNS zones.
2. Create the SPF record: Add a new TXT record with the value corresponding to UNEMPRENDE's mail servers (e.g.,. v=spf1 include:_spf.yourcompany.top ~all).
3. Generate and add the DKIM key: Copy the TXT record generated in the email control panel and add it to your DNS settings using the assigned selector (usually default._domainkey).
4. Check the propagation: Use free online tools to verify the validity and propagation of your new digital security signatures.

Benefits of Proper Email Configuration

By implementing these measures, you prevent cybercriminals from impersonating your brand to carry out scams and ensure that your important communications are delivered immediately. At UNEMPRENDE, we take care of setting up native security for your accounts so you don’t have to worry about complex technical details. Learn about our plans and solutions at Optimized Web Hosting.