{"id":231,"date":"2026-05-22T05:55:48","date_gmt":"2026-05-22T05:55:48","guid":{"rendered":"https:\/\/sunserver.in\/blog\/?p=231"},"modified":"2026-05-22T05:59:15","modified_gmt":"2026-05-22T05:59:15","slug":"spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in","status":"publish","type":"post","link":"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/","title":{"rendered":"SPF, DKIM &amp; DMARC Explained \u2013 Secure Your Emails with SunServer.in"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#SPF_DKIM_and_DMARC_Policy_Explained_%E2%80%93_How_to_Authenticate_Your_Email\" >SPF, DKIM, and DMARC Policy Explained \u2013 How to Authenticate Your Email?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#Why_Email_Authentication_Matters_in_2026\" >Why Email Authentication Matters in 2026<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%8C%90_SPF_Sender_Policy_Framework\" >\ud83c\udf10 SPF (Sender Policy Framework)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%94%91_DKIM_DomainKeys_Identified_Mail\" >\ud83d\udd11 DKIM (DomainKeys Identified Mail)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%9B%A1%EF%B8%8F_DMARC_Domain-based_Message_Authentication_Reporting_Conformance\" >\ud83d\udee1\ufe0f DMARC (Domain-based Message Authentication, Reporting &amp; Conformance)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#DMARC_Policy_Levels\" >DMARC Policy Levels:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%9A%80_How_SPF_DKIM_DMARC_Work_Together\" >\ud83d\ude80 How SPF, DKIM &amp; DMARC Work Together<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%E2%9C%85_Step-by-Step_Setup_with_SunServerin\" >\u2705 Step-by-Step Setup with SunServer.in<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%A7%A9_Common_Mistakes_to_Avoid\" >\ud83e\udde9 Common Mistakes to Avoid<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%8C%9F_Why_Choose_SunServerin\" >\ud83c\udf1f Why Choose SunServer.in?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%93%8C_FAQs_-_Frequently_Asked_Questions_About_Authenticating_Email\" >\ud83d\udccc FAQs - Frequently Asked Questions About Authenticating Email<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#Do_I_need_all_three_of_SPF_DKIM_and_DMARC\" >Do I need all three of SPF, DKIM and DMARC?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#What_is_the_difference_between_SPF_and_DKIM\" >What is the difference between SPF and DKIM?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#What_DMARC_policy_should_I_start_with\" >What DMARC policy should I start with?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#How_long_does_it_take_for_SPF_DKIM_and_DMARC_records_to_take_effect\" >How long does it take for SPF, DKIM, and DMARC records to take effect?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#What_happens_if_my_emails_fail_DMARC\" >What happens if my emails fail DMARC?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#Do_I_need_DMARC_if_my_domain_doesnt_send_email\" >Do I need DMARC if my domain doesn't send email?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/sunserver.in\/blog\/spf-dkim-dmarc-explained-secure-your-emails-with-sunserver-in\/#%F0%9F%94%90_Final_Word\" >\ud83d\udd10 Final Word<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SPF_DKIM_and_DMARC_Policy_Explained_%E2%80%93_How_to_Authenticate_Your_Email\"><\/span>SPF, DKIM, and DMARC Policy Explained \u2013 How to Authenticate Your Email?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/sunserver.in\/blog\">Blog\/&nbsp;SPF, DKIM, and DMARC Policy Explained \u2013 How to Authenticate Your Email?<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Email_Authentication_Matters_in_2026\"><\/span>Why Email Authentication Matters in 2026<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Email authentication is no longer optional. Providers like Gmail, Yahoo, and Microsoft now <strong>require strict SPF, DKIM, and DMARC checks<\/strong>. Without them, your emails risk being flagged as spam, rejected outright, or worse \u2014 your domain could be spoofed for phishing attacks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At <strong>SunServer.in<\/strong>, we help businesses configure these records correctly to ensure:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2705 Trusted email delivery<\/li>\n\n\n\n<li>\u2705 Protection against spoofing &amp; fraud<\/li>\n\n\n\n<li>\u2705 Strong sender reputation for long\u2011term deliverability<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%8C%90_SPF_Sender_Policy_Framework\"><\/span>\ud83c\udf10 SPF (Sender Policy Framework)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SPF is your domain\u2019s <strong>first line of defense<\/strong>. It tells receiving mail servers which IPs or services are authorized to send emails on your behalf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How SPF Works:<\/strong> When an email is received, the destination server checks the sending IP against your SPF record. If it matches, SPF passes; if not, it fails.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Example SPF Record:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Code<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>v=spf1 include:_spf.google.com include:sendgrid.net ~all<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f <strong>SPF Trap \u2013 The 10 Lookup Limit<\/strong> SPF allows only 10 DNS lookups. Exceeding this causes silent failures (PermError). At SunServer.in, we optimize SPF records by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Removing unused services<\/li>\n\n\n\n<li>Avoiding nested includes<\/li>\n\n\n\n<li>Using SPF flattening when needed<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%94%91_DKIM_DomainKeys_Identified_Mail\"><\/span>\ud83d\udd11 DKIM (DomainKeys Identified Mail)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM adds a <strong>cryptographic signature<\/strong> to each outgoing email, ensuring the message hasn\u2019t been altered in transit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How DKIM Works:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Private key signs the email<\/li>\n\n\n\n<li>Public key is published in DNS<\/li>\n\n\n\n<li>Receiving servers verify the signature<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Example DKIM Record:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Code<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>selector._domainkey.yourdomain.com TXT \"v=DKIM1; k=rsa; p=PUBLICKEY\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">At SunServer.in, we configure DKIM for all your services (Google Workspace, Microsoft 365, CRMs, marketing tools) to ensure <strong>consistent authentication<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%9B%A1%EF%B8%8F_DMARC_Domain-based_Message_Authentication_Reporting_Conformance\"><\/span>\ud83d\udee1\ufe0f DMARC (Domain-based Message Authentication, Reporting &amp; Conformance)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DMARC is the <strong>policy enforcer<\/strong>. It decides what happens when SPF or DKIM fails and ensures alignment with the visible \u201cFrom\u201d domain.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Example DMARC Record:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Code<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>v=DMARC1; p=reject; rua=mailto:dmarc-reports@yourdomain.com; pct=100; adkim=r; aspf=r<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DMARC_Policy_Levels\"><\/span>DMARC Policy Levels:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>p=none<\/strong> \u2192 Monitor only (best for initial setup)<\/li>\n\n\n\n<li><strong>p=quarantine<\/strong> \u2192 Send suspicious emails to spam<\/li>\n\n\n\n<li><strong>p=reject<\/strong> \u2192 Block unauthenticated emails completely<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcca <strong>DMARC Reports<\/strong>: These reveal unauthorized senders, missing SPF\/DKIM setups, and alignment issues. SunServer.in provides <strong>report analysis tools<\/strong> so you can safely progress from monitoring to full enforcement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%9A%80_How_SPF_DKIM_DMARC_Work_Together\"><\/span>\ud83d\ude80 How SPF, DKIM &amp; DMARC Work Together<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Email is sent \u2192 Receiving server checks SPF<\/li>\n\n\n\n<li>DKIM verifies message integrity<\/li>\n\n\n\n<li>DMARC enforces alignment &amp; policy<\/li>\n\n\n\n<li>Reports are generated for domain owners<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Together, they form a <strong>complete authentication system<\/strong> that boosts trust and deliverability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_Step-by-Step_Setup_with_SunServerin\"><\/span>\u2705 Step-by-Step Setup with SunServer.in<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Audit all senders<\/strong> (email provider, CRM, marketing tools, support systems)<\/li>\n\n\n\n<li><strong>Publish SPF record<\/strong> with authorized services<\/li>\n\n\n\n<li><strong>Enable DKIM<\/strong> for each sender<\/li>\n\n\n\n<li><strong>Start DMARC at p=none<\/strong> to monitor activity<\/li>\n\n\n\n<li><strong>Gradually enforce<\/strong> \u2192 move to quarantine \u2192 reject<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%A7%A9_Common_Mistakes_to_Avoid\"><\/span>\ud83e\udde9 Common Mistakes to Avoid<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multiple SPF records (only one allowed)<\/li>\n\n\n\n<li>Exceeding SPF lookup limit<\/li>\n\n\n\n<li>Missing DKIM for services<\/li>\n\n\n\n<li>Ignoring DMARC alignment rules<\/li>\n\n\n\n<li>Jumping directly to p=reject without monitoring<\/li>\n\n\n\n<li>Not analyzing DMARC reports<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%8C%9F_Why_Choose_SunServerin\"><\/span>\ud83c\udf1f Why Choose SunServer.in?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At <strong>SunServer.in<\/strong>, we specialize in <strong>secure email hosting and VPS solutions<\/strong>. Our team ensures your SPF, DKIM, and DMARC records are correctly configured, monitored, and enforced \u2014 protecting your brand reputation and maximizing deliverability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With our <strong>KVM VPS NVMe hosting<\/strong>, you get full control over DNS records, advanced security, and the flexibility to manage authentication seamlessly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc FAQs &#8211; Frequently Asked Questions About Authenticating Email<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Do I need all three (SPF, DKIM, DMARC)?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> Yes. SPF verifies the sender, DKIM secures the content, and DMARC enforces policy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What DMARC policy should I start with?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> Always begin with <strong>p=none<\/strong> for monitoring, then move to quarantine and reject.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How long do DNS changes take?<\/strong> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Usually within hours, but global propagation may take up to 48 hours.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Do I need DMARC if my domain doesn\u2019t send email?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> Yes. A reject policy prevents attackers from spoofing your domain.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_I_need_all_three_of_SPF_DKIM_and_DMARC\"><\/span>Do I need all three of SPF, DKIM and DMARC?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, all three are essential for complete email authentication because each protocol handles a different part of the process. SPF verifies the sender, DKIM ensures message integrity, and DMARC enforces policy. Using only one or two leaves gaps in both security and deliverability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_SPF_and_DKIM\"><\/span>What is the difference between SPF and DKIM?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SPF verifies whether the sending server is authorised by checking its IP address against your domain\u2019s record. DKIM, on the other hand, uses a cryptographic signature to verify that the message has not been altered. In simple terms, SPF checks the source, while DKIM validates the message itself.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_DMARC_policy_should_I_start_with\"><\/span>What DMARC policy should I start with?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You should always start with p=none, which allows you to monitor email activity without affecting delivery. This stage helps identify all legitimate senders and detect any issues. Once everything is verified, you can safely move to stricter policies like quarantine and rejection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_long_does_it_take_for_SPF_DKIM_and_DMARC_records_to_take_effect\"><\/span>How long does it take for SPF, DKIM, and DMARC records to take effect?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In most cases, DNS changes take effect within a few minutes to a few hours. However, full global propagation can take up to 48 hours, depending on your DNS provider and TTL settings. It\u2019s important to verify records after this period to ensure they are correctly applied.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_happens_if_my_emails_fail_DMARC\"><\/span>What happens if my emails fail DMARC?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The outcome depends on your DMARC policy setting. Under p=none, emails are delivered normally and only reported. Under p=quarantine, they are typically sent to spam or junk folders. Under p=reject, they are blocked at the SMTP level and never delivered to the recipient.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Do I need DMARC if my domain doesn&#8217;t send email?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, implementing DMARC on a non-sending domain is highly recommended. It prevents attackers from spoofing your domain for phishing or fraud. Setting a p=reject policy ensures that any unauthorised email is automatically blocked.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%94%90_Final_Word\"><\/span>\ud83d\udd10 Final Word<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SPF, DKIM, and DMARC are <strong>non\u2011negotiable in 2026<\/strong>. With SunServer.in, you can secure your domain, protect against spoofing, and ensure your emails land in the inbox \u2014 not the spam folder.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SPF, DKIM, and DMARC Policy Explained \u2013 How to Authenticate Your Email? Blog\/&nbsp;SPF, DKIM, and DMARC Policy Explained \u2013 How to Authenticate Your Email? Why Email Authentication Matters in 2026 Email authentication is no longer optional. Providers like Gmail, Yahoo, and Microsoft now require strict SPF, DKIM, and DMARC checks. Without them, your emails risk [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":232,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hosting"],"_links":{"self":[{"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/posts\/231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/comments?post=231"}],"version-history":[{"count":2,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/posts\/231\/revisions"}],"predecessor-version":[{"id":235,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/posts\/231\/revisions\/235"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/media\/232"}],"wp:attachment":[{"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/media?parent=231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/categories?post=231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sunserver.in\/blog\/wp-json\/wp\/v2\/tags?post=231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}