{"id":63477,"date":"2026-09-17T11:44:06","date_gmt":"2026-09-17T11:44:06","guid":{"rendered":"https:\/\/easydmarc.com\/blog\/?p=63477"},"modified":"2026-09-17T11:44:20","modified_gmt":"2026-09-17T11:44:20","slug":"why-are-my-emails-being-blocked","status":"publish","type":"post","link":"https:\/\/easydmarc.com\/blog\/why-are-my-emails-being-blocked\/","title":{"rendered":"Why Are My Emails Being Blocked? Causes &#038; How to Fix It"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Sending an email does not always mean it will actually reach the person you sent it to. Sometimes, the receiving mail server blocks the message completely. Other times, the email gets accepted but quietly ends up in the spam folder.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, if you are wondering why are my emails being blocked? There can be a few different reasons. Your <a href=\"https:\/\/easydmarc.com\/blog\/email-authentication-what-it-is-and-why-it-matters\/\">email authentication<\/a> records may be missing or set up incorrectly. Your domain or IP address may have a poor reputation. Your emails may also trigger spam filters, or you may be sending a large number of emails too quickly. The good news is that email blocking is usually something you can troubleshoot and fix.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this guide, we will look at the most common reasons why your emails are getting blocked, how to identify the cause, and what you can do to improve your email delivery.<\/p>\n\n\n\n<h2 id=\"h-missing-or-misconfigured-spf-dkim-or-dmarc-records\" class=\"wp-block-heading\"><strong>Missing or Misconfigured SPF, DKIM, or DMARC Records<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of the first things to check when you are trying to understand why emails are blocked is email authentication. Before a receiving mail server decides what to do with your email, it wants to know whether the message is actually coming from a legitimate source. This is where <a href=\"https:\/\/easydmarc.com\/blog\/whats-the-difference-between-spf-dkim-and-dmarc\/\">SPF, DKIM, and DMARC<\/a> come in. These three authentication methods help receiving servers verify your emails and decide whether they can be trusted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If your authentication records are missing, incorrect, or not set up for all the services that send email on your behalf, your messages may fail these checks. That can make it more likely for them to be blocked or sent to spam.<\/p>\n\n\n\n<h3 id=\"h-spf-problems\" class=\"wp-block-heading\"><strong>SPF Problems<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/easydmarc.com\/blog\/understanding-spf-sender-policy-framework-to-improve-email-delivery\/\">SPF, or Sender Policy Framework<\/a>, tells receiving mail servers which servers and services are allowed to send emails using your domain. This is important because most businesses use more than one service to send email. You might use Google Workspace or Microsoft 365 for regular business email and a platform such as Mailchimp for marketing emails. If those legitimate sending sources are not properly covered by your SPF setup, some of your emails may fail SPF authentication.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are a few common SPF problems to look out for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>No SPF record exists for your domain.<\/li>\n\n\n\n<li>More than one SPF record exists for the same domain.<\/li>\n\n\n\n<li>A legitimate sending service is missing from the SPF record.<\/li>\n\n\n\n<li>The SPF record contains a syntax error.<\/li>\n\n\n\n<li>The SPF record exceeds the 10 DNS lookup limit.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These problems are not always obvious just by looking at the record, especially when several email services have been added over time. So, you can use the <a href=\"https:\/\/easydmarc.com\/tools\/spf-lookup\">EasyDMARC SPF Lookup Tool<\/a> to check your domain&#8217;s SPF record, see which sending sources are included, and find common configuration problems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you need to create an SPF record from scratch, an <a href=\"https:\/\/easydmarc.com\/tools\/spf-record-generator\">SPF Record Generator<\/a> can also help you build one based on the email services you actually use.<\/p>\n\n\n\n<h3 id=\"h-dkim-problems\" class=\"wp-block-heading\"><strong>DKIM Problems<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/easydmarc.com\/blog\/what-is-dkim\/\">DKIM, or DomainKeys Identified Mail<\/a>, works a little differently. It adds a digital signature to your outgoing emails. When the message reaches the recipient&#8217;s mail server, the server can use the public key published in your DNS to check whether that signature is valid. If there is an issue with your DKIM setup, the receiving server may be unable to verify the message properly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some common DKIM problems include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The DKIM record is missing.<\/li>\n\n\n\n<li>The wrong selector is being used.<\/li>\n\n\n\n<li>The published public key is incorrect.<\/li>\n\n\n\n<li>The email is changed after it has been signed.<\/li>\n\n\n\n<li>Your email provider is not signing messages correctly.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">You can use the <a href=\"https:\/\/easydmarc.com\/tools\/dkim-lookup\">EasyDMARC DKIM Lookup Tool<\/a> to check the DKIM record published for your domain. It can help you verify the selector, public key, and record syntax so you can spot configuration issues more easily.<\/p>\n\n\n\n<h3 id=\"h-dmarc-problems\" class=\"wp-block-heading\"><strong>DMARC Problems<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/easydmarc.com\/blog\/what-is-dmarc-overview\/\">DMARC, or Domain-based Message Authentication, Reporting, and Conformance<\/a>, builds on SPF and DKIM. It tells receiving mail servers what to do when an email fails authentication and does not meet the required alignment rules. This becomes especially important when you have a strict <a href=\"https:\/\/easydmarc.com\/blog\/what-is-a-dmarc-policy\/\">DMARC policy<\/a> in place.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, imagine your company starts using a new email marketing platform. The platform is legitimately sending emails on your behalf, but you have not configured SPF or DKIM correctly. If those emails fail DMARC alignment and your domain has a p=reject policy, the receiving server may reject them instead of delivering them.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is why it is a good idea to identify all the services that send email for your domain before enforcing a strict DMARC policy. You want your legitimate emails to pass authentication first. Otherwise, a security measure designed to protect your domain could end up blocking some of your own emails. Use the <a href=\"https:\/\/easydmarc.com\/tools\/dmarc-lookup\">EasyDMARC DMARC Record Lookup Tool<\/a> to identify and fix issues before threat actors exploit them or your emails start getting blocked.&nbsp;<\/p>\n\n\n\n<h2 id=\"h-your-domain-or-ip-address-has-a-poor-reputation\" class=\"wp-block-heading\"><strong>Your Domain or IP Address Has a Poor Reputation<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Another major reason why your emails may be getting blocked is sender reputation. Email providers use reputation signals to decide whether they should trust messages from a particular sender. Your domain and sending IP reputations can be affected by how recipients interact with your emails and by whether your sending behavior appears trustworthy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Your reputation can suffer when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Many recipients mark your emails as spam.<\/li>\n\n\n\n<li>You send emails to old or invalid addresses.<\/li>\n\n\n\n<li>Your emails generate a high bounce rate.<\/li>\n\n\n\n<li>Your domain has been associated with suspicious activity.<\/li>\n\n\n\n<li>You suddenly send a much larger volume of email.<\/li>\n\n\n\n<li>Your shared IP address is being used by other senders with poor reputations.<\/li>\n\n\n\n<li>Your domain has been compromised and used to send spam.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A poor sender reputation can still cause your emails to go to spam or get blocked, even when SPF, DKIM, and DMARC are set up correctly. This is because authentication and reputation do different jobs. Authentication shows that your email is really coming from your domain. Reputation tells the receiving mail provider whether it trusts your domain and sending history.<\/p>\n\n\n\n<h3 id=\"h-how-to-improve-sender-reputation\" class=\"wp-block-heading\"><strong>How To Improve Sender Reputation<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">There are a few simple things you can do to improve your sending reputation and lower the chances of your emails being blocked.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Clean your email lists<\/strong>: Remove invalid, old, and inactive email addresses from your lists. Sending emails again and again to addresses that bounce or never respond can hurt your reputation.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Avoid sudden increases in email volume<\/strong>: Try to increase your sending volume slowly. If you usually send a few hundred emails and suddenly send tens of thousands, mailbox providers may see this as unusual or suspicious.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Watch your spam complaints and bounces<\/strong>: Check how people respond to your emails. If many people mark your emails as spam or your emails keep bouncing, it can hurt your sending reputation.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Check your domain and IP reputation<\/strong>: Check if your domain or sending IP address is listed on any blocklists. Being on a blocklist does not always mean your emails will be blocked, but it is a sign that you should look into the problem.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-your-email-looks-like-spam-or-phishing\" class=\"wp-block-heading\"><strong>Your Email Looks Like Spam or Phishing<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sometimes the problem is not your DNS records or reputation. The message itself can trigger spam filters. Modern spam filters look at many signals; they can examine the content of your email, links, attachments, sending behavior, recipient engagement, and other technical details.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Certain patterns can increase the chance of filtering. For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Using misleading subject lines.<\/li>\n\n\n\n<li>Sending emails with suspicious or shortened links.<\/li>\n\n\n\n<li>Including too many links.<\/li>\n\n\n\n<li>Using attachments that look risky.<\/li>\n\n\n\n<li>Sending messages with unusual formatting.<\/li>\n\n\n\n<li>Using language commonly associated with scams.<\/li>\n\n\n\n<li>Hiding the real destination of links.<\/li>\n\n\n\n<li>Making the message look very different from your normal emails.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This does not mean you can never use promotional language or include links. Spam filters do not simply search for a list of &#8220;bad words.&#8221; They consider many signals together.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, an email with a normal subject line, valid authentication, a good sending reputation, and useful content is very different from an unexpected email sent from a new domain with several suspicious links.<\/p>\n\n\n\n<h3 id=\"h-check-the-actual-email-headers\" class=\"wp-block-heading\"><strong>Check the Actual Email Headers<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Email headers can tell you a lot about what happened to your email while it was being delivered. They can show whether SPF, DKIM, and DMARC passed or failed, which IP address sent the email, and other details that can help you find the problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can use an email header analyzer to check this information. <a href=\"https:\/\/easydmarc.com\/tools\/email-header-analyzer\">EasyDMARC&#8217;s Email Header Analyzer<\/a> checks authentication results, DNS settings, blacklists, and other details that can affect email delivery.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After you get the results, check for any failed authentication checks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SPF Failed<\/strong>: Check if the server or email service that sent the message is included in your SPF record.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DKIM Failed<\/strong>: Check if the correct DKIM record and selector are added to your DNS.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DMARC Failed<\/strong>: Check if your SPF or DKIM authentication is properly aligned with your From domain.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The email header can also show you the IP address that sent the message. If the IP has a poor reputation or is on a blocklist, you may need to check the email service or system that is sending your emails.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If SPF, DKIM, and DMARC all pass but your email still goes to spam, the problem may be somewhere else. Your sender reputation, email content, sending habits, or low recipient engagement could be the reason.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is particularly helpful when you know an email was blocked or sent to spam but cannot figure out why. Instead of changing your DNS records or email settings at random, check the email header first. Find the actual problem, fix it, and then send a test email again.<\/p>\n\n\n\n<h2 id=\"h-your-domain-or-email-account-may-have-been-compromised\" class=\"wp-block-heading\"><strong>Your Domain or Email Account May Have Been Compromised<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If your emails were reaching inboxes normally and suddenly started getting blocked, your domain or email account may have been compromised. An attacker who gets access to an email account, SMTP credentials, an API key, or a website contact form can use it to send large amounts of spam or phishing emails.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This can quickly damage your domain or IP reputation. As a result, receiving mail servers may start treating your legitimate emails as suspicious and block them too.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are a few warning signs to look for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Unknown users or forwarding rules<\/strong>: Check your email accounts for unfamiliar users, forwarding addresses, filters, or rules that you did not create.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Compromised SMTP credentials or API keys<\/strong>: If an attacker gets access to these credentials, they may be able to send emails through your legitimate email infrastructure.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Suspicious website contact forms<\/strong>: An insecure contact form can sometimes be abused to send spam through your domain.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Unusual sending IPs<\/strong>: Check your email headers and logs for sending IP addresses that you do not recognize.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-how-to-fix-a-compromised-email-account-or-domain\" class=\"wp-block-heading\"><strong>How to Fix a Compromised Email Account or Domain<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you find signs that your domain or email account has been compromised, take these steps:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Secure the affected account<\/strong>: Change compromised passwords and email credentials immediately. Enable multi-factor authentication wherever possible.<\/li>\n\n\n\n<li><strong>Revoke exposed credentials<\/strong>: If an SMTP credential, API key, or other access token was exposed, revoke it and create a new one.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Remove unauthorized access<\/strong>: Check for unknown users, forwarding addresses, filters, and email rules. Remove anything you did not create or recognize.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Check your email logs and headers<\/strong>: Look for unusual sending activity, unexpected messages, and unfamiliar sending IP addresses. This can help you find where the unwanted emails came from.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Secure compromised applications<\/strong>: If a website form, plugin, or application was used to send spam, update or secure it before allowing it to send emails again.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Check your sender reputation<\/strong>: Find out whether the unwanted activity has affected your domain or sending IP reputation. If your domain was used to send spam, you may need to take additional steps to rebuild your reputation.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Reduce suspicious sending activity<\/strong>: Stop unauthorized or unusual email traffic and return to normal sending patterns. Mailbox providers may need some time to see that the problem has been resolved.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-keep-your-emails-deliverable-and-secure\" class=\"wp-block-heading\"><strong>Keep Your Emails Deliverable and Secure<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It is easier to prevent email problems than to fix them later. Check your email authentication records, sending activity, and domain reputation regularly. Do not wait until important emails start bouncing or going to spam. Make sure your SPF, DKIM, and DMARC records are set up correctly. Also, check new email services before they start sending emails for your domain, and look into any unusual email activity as soon as you notice it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EasyDMARC helps you check and manage your email authentication in one place. This makes it easier to find problems early, fix them quickly, and keep your domain safe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want to improve your email security? <a href=\"https:\/\/uac.easydmarc.com\/realms\/easydmarc\/protocol\/openid-connect\/auth?client_id=dmarc-app&amp;scope=openid&amp;response_type=code&amp;redirect_uri=https%3A%2F%2Fapp.easydmarc.com%2Flogin%2Fcallback&amp;state=eyJ1c2VySXAiOiIyNDA2OmI0MDA6NzI6NjM5ODpmOTljOjRlZDY6OGM1ZToxNjRhIiwiZ29VcmwiOiIiLCJsb2dpbk9wdGlvbnMiOnt9fQ%3D%3D&amp;code_challenge=58cerK2zL4pRk5Qz9VWYShl7D41iD9WScJvMjkjaqKk&amp;code_challenge_method=S256\">Start your 14-day free EasyDMARC trial today<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With EasyDMARC, domain owners can reach full DMARC enforcement in just 2\u20133 weeks. Even complicated enterprise setups can reach full enforcement in 50\u201355 days with our help.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sending an email does not always mean it &#8230;<\/p>\n","protected":false},"author":58,"featured_media":63478,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[204,295],"tags":[565],"class_list":["post-63477","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-deliverability","tag-reputation-threat-intelligenc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why Are My Emails Being Blocked? | EasyDMARC<\/title>\n<meta name=\"description\" content=\"Emails getting blocked? 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