Sender Policy Framework (SPF) - Online Help | Zoho Campaigns

Sender Policy Framework (SPF)

Spam is a major bottleneck issue that the email marketing industry faces on a daily basis. Fraudsters often try to forge the sender address of emails and try to perform malicious activities. The only way to protect your emails and improve deliverability is by implementing email authentication. Sender Policy Framework (SPF) is an authentication technique that helps receiving email servers identify legitimate email senders and prevent spam entering the inbox of email recipients.

How SPF works

SPF allows an email sender to publish the list of IPs from which emails will be sent on their behalf. When we send email campaigns, the receiving server of the mailbox provider will perform a TXT record DNS lookup for the return-path domain. As a result, an SPF record will be returned. The SPF record will contain the list of IP addresses that are authorized to send emails on our behalf. When the IP address that was used to send the email campaign is present in that list, the email will pass SPF validation.

More about the  SPF record 

  1. SPF is a “path-based” authentication system
  2. An SPF record is a unique DNS TXT record
  3. The record contains a list of IP addresses published by an email sender

 Decoding an SPF record value 

Sample SPF record:
v=spf1 ~all
  1. v: This indicates the version of SPF that's being used.
  2. include: The include statements asks the receiving servers to include the SPF records of the specified domain. In our scenario, since the domain will be, its SPF records will looked up. The SPF records contain the set of IP addresses through which emails are being sent.
  3. ~all: When SPF fails, "all" will decide how receiving servers should handle the email. At Zoho Campaigns, we generally use the "Soft fail" approach. When SPF fails, the email will be accepted but tagged as a "Soft Fail." 

 Benefits of implementing SPF 

Implementing SPF will help us fight email spoofing. It also earns the trust of mailbox providers. This will help you improve deliverability as major mailbox providers prefer offering inbox placement for emails from an authenticated sender domain.
At Zoho Campaigns, we set up SPF for all of our users. All you need to do is copy the SPF value and paste it into your domain hosting website. Marketers need to understand that implementing SPF alone will not safeguard emails. To improve deliverability and protect your sender domain and emails from phishing and spoofing attacks, we recommend you implement DKIM and DMARC along with SPF.
Click here to learn how to set up an SPF record for your sender domain.

    Zoho DataPrep Personalized Demo

    If you'd like a personalized walk-through of our data preparation tool, please request a demo and we'll be happy to show you how to get the best out of Zoho DataPrep.

    Zoho CRM Training

      Create, share, and deliver

      beautiful slides from anywhere.

      Get Started Now

              Zoho CRM Training Programs

              Learn how to use the best tools for sales force automation and better customer engagement from Zoho's implementation specialists.

              Zoho CRM Training

                  Zoho SalesIQ Resources

                      Zoho TeamInbox Resources

                                Zoho DataPrep Resources

                                  Zoho DataPrep Demo

                                  Get a personalized demo or POC

                                  REGISTER NOW

                                    Design. Discuss. Deliver.

                                    Create visually engaging stories with Zoho Show.

                                    Get Started Now

                                                          • Related Articles

                                                          • What is a Sender Policy Framework (SPF)?

                                                            The Sender Policy Framework (SPF) record is a validation mechanism used to prevent email spoofing. This policy allows the sender to list all the addresses from which emails will be sent on their behalf. During SPF validation, the email header is ...
                                                          • Steps to authenticate your sender domain

                                                            At Zoho Campaigns, we strongly urge you to authenticate your domain by implementing SPF and DKIM.   SPF Sender Policy Framework is an authentication technique that helps receiving email servers identify legitimate email senders and prevent spam ...
                                                          • How a public domain sender address affects email deliverability

                                                            Whenever you send campaigns, they will be delivered to the receiving server of the respective mailbox provider. The receiving server will offer inbox placement after carefully scrutinizing the email. If the emails are from a source that the mailbox ...
                                                          • Getting started with email deliverability

                                                            Identifying the needs and interests of contacts and conceptualizing email campaigns around those are part and parcel of a marketer's daily routine. Sometimes marketers may assume that crafting a compelling campaign alone will help them hit their ...
                                                          • Is it mandatory to authenticate my email domain?

                                                            Domain authentication is the process of implementing validation mechanisms to increase the credibility of your marketing emails. We strongly recommend you authenticate your sender domain as it will help your emails land in the inbox and safeguard ...



                                                          Watch comprehensive videos on features and other important topics that will help you master Zoho CRM.


                                                          Download free eBooks and access a range of topics to get deeper insight on successfully using Zoho CRM.


                                                          Sign up for our webinars and learn the Zoho CRM basics, from customization to sales force automation and more.

                                                          CRM Tips

                                                          Make the most of Zoho CRM with these useful tips.

                                                            Zoho Show Resources