{"id":29712,"date":"2022-09-08T15:11:28","date_gmt":"2022-09-08T15:11:28","guid":{"rendered":"https:\/\/easydmarc.com\/blog\/?p=29712"},"modified":"2025-07-30T12:11:43","modified_gmt":"2025-07-30T12:11:43","slug":"how-to-protect-against-email-spoofing-with-spf","status":"publish","type":"post","link":"https:\/\/easydmarc.com\/blog\/how-to-protect-against-email-spoofing-with-spf\/","title":{"rendered":"How to Protect Against Email Spoofing with SPF"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The world is so swamped by cybercrime that even big eCommerce tycoons like Amazon struggle to implement effective email spoofing protection. Lately, <\/span><a href=\"https:\/\/www.cnbc.com\/2022\/07\/31\/fake-texts-posing-as-amazon-how-to-handle-phishing-smishing-attacks.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">hackers are sending fake emails<\/span><\/a><span style=\"font-weight: 400;\"> and text messages from Amazon officials.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">They\u2019re manipulating targeted people into submitting sensitive details or clicking corrupt links to infect devices with viruses.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">News like this makes it even more important to understand what email spoofing is and how you can prevent it using SPF or the Sender Policy Framework.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Wondering <\/span><a href=\"https:\/\/easydmarc.com\/blog\/understanding-spf-sender-policy-framework-to-improve-email-delivery\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">what SPF is<\/span><\/a><span style=\"font-weight: 400;\">?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SPF is an email authentication technique to avert email-based phishing and spoofing attacks. It allows only trusted IPs to send email messages using your domain name.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Emails sent from other IPs fail authentication and don\u2019t reach a recipient\u2019s mailbox, thus stopping malicious actors from ruining your business image. Knowing<\/span><span style=\"font-weight: 400;\"> how an SPF record works<\/span><span style=\"font-weight: 400;\"> is helpful, but how does SPF prevent cyber threats?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Find out <\/span><b>how to protect against email spoofing<\/b><span style=\"font-weight: 400;\"> using SPF below.<\/span><\/p>\n<h2><b>What is Email Spoofing?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">When you <\/span><a href=\"https:\/\/easydmarc.com\/tools\/spf-record-generator\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">create an SPF record<\/span><\/a> <span style=\"font-weight: 400;\">correctly, you\u2019re <\/span><b>protecting your domain against email spoofing<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">But <\/span><a href=\"https:\/\/easydmarc.com\/blog\/what-is-spoofing-definition-and-explanation\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">what is email spoofing?<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">Well, it\u2019s a type of cybercrime where spam emails are sent using the identity of a trusted company or individual. Bad actors send fake emails that appear legitimate so they can trick victims into sharing sensitive details or downloading malware-infected files.<\/span><\/p>\n<h3><b>Usual Motives Behind Email Spoofing Attacks<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Cybercriminals use email spoofing to accomplish many ulterior goals:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Hiding their identities<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Avoiding a spam blocklist<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Damaging a brand\u2019s image<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Intending to do personal damage<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Requesting transfers of money<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Tricking victims into submitting sensitive details like passwords and login credentials<\/span><\/li>\n<li><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Fraudulently gaining targets\u2019 financial details or OTPs<\/span><\/span><\/span><\/li>\n<\/ul>\n<h2><b>How are Phishing and Spoofing Connected?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Before we get into <\/span><b>email spoofing protection <\/b><span style=\"font-weight: 400;\">with SPF, it helps to know how phishing and spoofing are connected.<\/span><\/p>\n<p><a href=\"https:\/\/easydmarc.com\/blog\/12-types-of-phishing-attacks-and-how-to-identify-them\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Phishing<\/span><\/a><span style=\"font-weight: 400;\"> is a <\/span><a href=\"https:\/\/easydmarc.com\/blog\/social-engineering-a-complete-guide\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">social engineering<\/span><\/a><span style=\"font-weight: 400;\"> tactic where hackers manipulate you into sharing sensitive and personal information. They then use data like social security numbers, bank details, and login credentials to conduct criminal activities.<\/span><\/p>\n<p><a href=\"https:\/\/easydmarc.com\/blog\/12-types-of-phishing-attacks-and-how-to-identify-them\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Phishing attacks<\/span><\/a><span style=\"font-weight: 400;\"> are successful as they often use emails designed to look legitimate and from a trusted sender. These cyberattacks exploit human nature, incorporating elements of urgency, fear, or excitement.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For example, a phishing email might look like an urgent bank message saying your account has been compromised and you need to submit your login credentials. It could also seem like communication from your boss requesting sensitive info or an email saying you\u2019ve won something and need to click on a malicious link (disguised as a genuine one).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can avoid phishing attacks by checking if an email is sent from an authentic and credible domain. Other factors like misspellings, unrequested or unidentified links and files, unusual requests, etc., are red flags too.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the other hand, spoofing involves disguising illegitimate communication as legitimate. Bad actors use anything from email addresses and phone numbers to domain names and websites.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In email spoofing, they usually send emails from a typosquatted or extended email domain. Typosquatting is a cybercrime where malicious actors register domains with deliberate misspellings to lure victims into clicking a corrupt link or sharing crucial details-for example, using amaz0n.com instead of amazon.com.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Phishing and spoofing are often used interchangeably as they go hand-in-hand to form a believable email coming from a legitimate source. Hackers use email spoofing tactics to conceal phishing attempts and fool recipients.<\/span><\/p>\n<h2><b>Steps to Protect Against Spoofing<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">SPF <\/span><b>protects against email spoofing<\/b><span style=\"font-weight: 400;\"> by ensuring only emails sent from authorized IP addresses of your domain are delivered. It uses TXT records in the DNS to enlist all trusted IPs from which emails are sent to recipients&#8217; mailboxes. Companies can prevent phishing and spoofing attacks by <\/span><span style=\"font-weight: 400;\">adding an SPF record to DNS<\/span><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before delivery, an email is verified by the destination email server by checking the IP address against the listed IPs in DNS records of a particular domain.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SPF TXT records contain all authorized IP addresses and domain names of sending mail servers. To understand SPF creation, it helps to know the three elements of SPF records:<\/span><\/p>\n<p><b>Mechanisms<\/b><\/p>\n<p><span style=\"font-weight: 400;\">These are methods SPF can use to validate whether a particular domain is authorized to send emails. If an identified condition is fulfilled, the mechanism matches, and the mail can be verified (depending on the mechanism in question).<\/span><\/p>\n<p><b>Qualifiers: + (pass), &#8211; (hard fail), ~ (soft fail), ? (neutral)<\/b><\/p>\n<p><span style=\"font-weight: 400;\">These are optional prefixes that can be added to the above mechanisms to specify what happens when a mechanism is matched.<\/span><\/p>\n<p><b>Modifiers: Redirect, Exp<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These are also optional components providing extra information without changing the way messages are verified.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">All three of these components are usually necessary for <\/span><a href=\"https:\/\/easydmarc.com\/tools\/spf-record-generator\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">generating SPF records<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><b>What Do You Need to Do?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Here\u2019s all that you have to do if you want <\/span><b>email spoofing protection with SPF<\/b><span style=\"font-weight: 400;\">. We\u2019ve included relevant guides and tools below.\u00a0<\/span><\/p>\n<h4><b>Before Setting up SPF<\/b><\/h4>\n<ul>\n<li><span style=\"font-weight: 400;\">Acquire sign-in details of your domain provider.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Understand your IP addresses.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Learn about DNS TXT records.<\/span><\/li>\n<li><a href=\"https:\/\/easydmarc.com\/blog\/how-to-check-spf-records-with-easydmarc-tools\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Check if there\u2019s an existing SPF record for your domain.<\/span><\/a><\/li>\n<li><span style=\"font-weight: 400;\">Make a list of all IP addresses you want to allow to send emails using your domain.<\/span><\/li>\n<\/ul>\n<h4><b>Define Your SPF Record: Basic<\/b><\/h4>\n<ul>\n<li><a href=\"https:\/\/easydmarc.com\/blog\/understanding-spf-sender-policy-framework-to-improve-email-delivery\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">What is SPF?<\/span><\/a><\/li>\n<li><span style=\"font-weight: 400;\">How does an SPF record work?<\/span><\/li>\n<li><span style=\"font-weight: 400;\">SPF record examples<\/span><\/li>\n<\/ul>\n<h4><b>Define Your SPF Record: Advanced<\/b><\/h4>\n<ul>\n<li><span style=\"font-weight: 400;\">Understand SPF record formats and requirements.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Determine SPF record mechanisms.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Implement SPF record qualifiers.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Create your SPF records.<\/span><\/li>\n<\/ul>\n<h4><b>Add SPF Records to Your Domain<\/b><\/h4>\n<ul>\n<li><span style=\"font-weight: 400;\">Add an SPF record to your DNS.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Add SPF records for your subdomain.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Update your SPF record for new IPs.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Generate SPF records<\/span><span style=\"font-weight: 400;\"> quickly and easily.<\/span><\/li>\n<\/ul>\n<h3><b>Troubleshoot SPF Issues<\/b><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">Verify your SPF records.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Verify emails that pass SPF authentication.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cross-check if all the IPs are included.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Review your email-sending practices.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Use EasyDMARC\u2019s free <\/span><a href=\"https:\/\/easydmarc.com\/tools\/easy-spf\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">EasySPF<\/span><\/a><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"> tool to resolve the common &#8220;Too Many DNS Lookups&#8221; issue causing &#8220;Permerror.&#8221;<\/span><\/span><\/li>\n<\/ul>\n<h2><b>Next Steps<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">SPF is a crucial email authentication protocol that can <\/span><b>protect against email spoofing;<\/b><span style=\"font-weight: 400;\"> however, it has the following limitations:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">It doesn\u2019t work well with forwarded emails as they don\u2019t have original senders\u2019 authorized IP addresses.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Often senders fail to keep their SPF records updated to enlist all legitimate IP addresses allowed to send emails using your domain name. It also includes authorized third parties.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"><a href=\"https:\/\/easydmarc.com\/tools\/spf-lookup\">SPF verification<\/a> is done using the Mail From domain, and that\u2019s mostly hidden from the recipients.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Fortunately, this limitation has a solution. You can implement DKIM, short for DomainKeys Identified Mail, and DMARC, short for Domain-based Message Authentication, Reporting, and Conformance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">DKIM compliments SPF by deploying a cryptography-based authentication technique. It authenticates the email message and checks if hackers have manipulated or altered it in transit.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the other hand, DMARC uses <a href=\"https:\/\/easydmarc.com\/blog\/dmarc-dkim-and-spf-three-musketeers-of-email-authentication\/\" target=\"_blank\" rel=\"noopener\">DKIM and SPF<\/a> to form an extra layer of security to <\/span><a href=\"https:\/\/easydmarc.com\/blog\/how-to-prevent-spoofing\/\" target=\"_blank\" rel=\"noopener\"><b>protect against email spoofing<\/b><\/a><span style=\"font-weight: 400;\"> and other cyberattacks. It ensures SPF and DKIM protocols are in place. Moreover, it specifies the actions to be taken when <a href=\"https:\/\/easydmarc.com\/blog\/flodesk-spf-and-dkim-configuration\/\">SPF and DKIM authentication<\/a> fails for an email.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Essentially, DMARC protects your domain from cyberattackers using it fraudulently, prevents phishing and spoofing, and helps keep recipients\u2019 safe from these threats too.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The world is so swamped by cybercrime that &#8230;<\/p>\n","protected":false},"author":1,"featured_media":29713,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[204,203,286],"tags":[],"class_list":["post-29712","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-email-security","category-spf"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How to Protect Against Email Spoofing with SPF | EasyDMARC<\/title>\n<meta name=\"description\" content=\"SPF allows only permitted IPs to send emails. 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