{"id":7886,"date":"2026-04-23T10:14:35","date_gmt":"2026-04-23T08:14:35","guid":{"rendered":"https:\/\/mybox.com\/help\/?post_type=manual_kb&#038;p=7886"},"modified":"2026-04-23T10:14:36","modified_gmt":"2026-04-23T08:14:36","slug":"depanarea-problemelor-de-livrabilitate-a-e-mailurilor","status":"publish","type":"manual_kb","link":"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/","title":{"rendered":"Depanarea problemelor de livrare a e-mailurilor"},"content":{"rendered":"<div class=\"translation-block translation-block-merged\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom 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\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#Troubleshooting_email_deliverability_issues\" >Troubleshooting email deliverability issues<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#1_Verify_SPF_DKIM_and_DMARC_configuration\" >1. Verify SPF, DKIM, and DMARC configuration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#2_Send_via_SMTP_instead_of_PHP_mail\" >2. Send via SMTP instead of PHP mail()<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#3_Check_for_IP_Blacklisting\" >3. Check for IP Blacklisting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#4_Content_and_Sender_Reputation\" >4. Content and Sender Reputation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#5_Practical_Implications_for_mybox_Users\" >5. Practical Implications for mybox Users<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/troubleshooting-email-deliverability-issues\/#Summary\" >Summary<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Troubleshooting_email_deliverability_issues\"><\/span>Troubleshooting email deliverability issues<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Email deliverability depends on a series of security &#8220;handshakes&#8221; between your <strong>mybox<\/strong> server and the recipient&#8217;s inbox. If these handshakes fail, messages may be rejected, delayed, or filtered into spam folders. Understanding these technical layers is the first step toward building a high-reputation sender profile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Verify_SPF_DKIM_and_DMARC_configuration\"><\/span>1. Verify SPF, DKIM, and DMARC configuration<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To prevent spoofing and ensure trust, your domain must prove that it has the authority to send the email. This is handled by three DNS records:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SPF (Sender Policy Framework):<\/strong> A text record that lists the specific IP addresses or hostnames (like <code>mybox.com<\/code>) authorized to send mail for your domain.<\/li>\n\n\n\n<li><strong>DKIM (DomainKeys Identified Mail):<\/strong> A digital signature attached to every email. It allows the recipient&#8217;s server to verify that the email was actually sent from your domain and hasn&#8217;t been tampered with.<\/li>\n\n\n\n<li><strong>DMARC:<\/strong> A policy that tells receiving servers what to do if an email fails the SPF or DKIM checks (e.g., &#8220;reject it&#8221; or &#8220;put it in spam&#8221;).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Send_via_SMTP_instead_of_PHP_mail\"><\/span>2. Send via SMTP instead of PHP mail()<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<\/div>\n\n<div id=\"mybox-699006552\" class=\"mybox-content mybox-entity-placement\"><div class=\"early-access-banner-inpost\">\r\n  <div class=\"banner-left-inpost\">\r\n    <div class=\"icon-box-inpost\">\r\n      <img decoding=\"async\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/02\/square-info-icon.svg\" alt=\"Info\">\r\n    <\/div>\r\n    <div class=\"text-box-inpost\">\r\n      <span class=\"label-inpost\"><span class=\"translation-block translation-block-banner-text\">Acces timpuriu<\/span><\/span>\r\n      <h4><span class=\"translation-block translation-block-banner-text\">Mai ave\u021bi nevoie de ajutor?<\/span><\/h4>\r\n      <p><span class=\"translation-block translation-block-banner-text\">Contacta\u021bi echipa noastr\u0103 de servicii pentru clien\u021bi.<\/span><\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"banner-right-inpost\">\r\n    <a href=\"https:\/\/panel.mybox.com\/helpdesk2\/v\/list\/\" class=\"banner-button-inpost\"><span class=\"translation-block translation-block-banner-text\">Trimite mesaj<\/span><\/a>\r\n  <\/div>\r\n<\/div><\/div>\n\n<div class=\"translation-block translation-block-merged\"><p class=\"wp-block-paragraph\">By default, many applications (like WordPress) use the PHP <code>mail()<\/code> function. This method often produces &#8220;unauthenticated&#8221; headers that trigger spam filters.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For reliable delivery, you should always configure your application to use <strong>SMTP<\/strong> with your <strong>mybox<\/strong> credentials. This ensures every email is sent through an authorized, logged session.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Recommended SMTP Settings for mybox:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SMTP Server:<\/strong> <code>smtp.mybox.com<\/code><\/li>\n\n\n\n<li><strong>Port:<\/strong> <code>587<\/code> (STARTTLS) or <code>465<\/code> (SSL\/TLS)<\/li>\n\n\n\n<li><strong>Authentication:<\/strong> Required (use your full email address and password)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Check_for_IP_Blacklisting\"><\/span>3. Check for IP Blacklisting<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If your emails are being rejected by large providers like Gmail or Outlook, your server&#8217;s IP might have a poor reputation. This can happen if another user on the same infrastructure previously sent spam.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can check your status on professional monitoring sites:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/mxtoolbox.com\/blacklists.aspx\" target=\"_blank\" rel=\"noreferrer noopener\">MxToolbox Blacklist Check<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/multirbl.valli.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">MultiRBL<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If you find that a <strong>mybox<\/strong> IP is blacklisted, please contact our support team immediately via the <strong>mybox panel<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Content_and_Sender_Reputation\"><\/span>4. Content and Sender Reputation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Even with perfect technical settings, the content of your message can trigger filters.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Avoid &#8220;Spammy&#8221; Triggers:<\/strong> Excessive capital letters, bright red fonts, and aggressive sales language (e.g., &#8220;FREE!&#8221;, &#8220;URGENT!&#8221;, &#8220;WINNER!&#8221;) are common triggers.<\/li>\n\n\n\n<li><strong>Authorized Senders:<\/strong> Always send from a real, existing mailbox. Using &#8220;spoofed&#8221; addresses that don&#8217;t actually exist on your domain will lead to immediate rejection.<\/li>\n\n\n\n<li><strong>Link Hygiene:<\/strong> Ensure all links in your email lead to the domain you are sending from. Using too many URL shorteners (like bit.ly) can sometimes appear suspicious to automated filters.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Practical_Implications_for_mybox_Users\"><\/span>5. Practical Implications for mybox Users<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Test Your Score:<\/strong> Before sending an important campaign, use a service like <a href=\"https:\/\/www.mail-tester.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Mail-Tester<\/a>. It will give you a detailed report on your SPF\/DKIM status and content &#8220;spamminess.&#8221;<\/li>\n\n\n\n<li><strong>Monitor Logs:<\/strong> If you are using WordPress, install an SMTP plugin (like WP Mail SMTP) that includes logging. This allows you to see exactly when an email left your server and if the recipient&#8217;s server acknowledged it.<\/li>\n\n\n\n<li><strong>Webmail Access:<\/strong> If you are unsure if the issue is with your local email client (like Outlook or Apple Mail), try sending a message via <strong>mail.mybox.com<\/strong>. If it works there, the issue is likely in your local configuration.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reliable email delivery is a combination of correct DNS records, secure SMTP authentication, and high-quality content. By aligning your domain with <strong>mybox<\/strong> security standards and monitoring your server&#8217;s reputation, you ensure your messages reach their destination. If technical hurdles persist, our specialists are available via the 24\/7 Helpdesk in the <strong>mybox panel<\/strong>.<\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","format":"standard","manualknowledgebasecat":[41,45],"manual_kb_tag":[339,797,996,1282,1295,1399,1407,2085,4912,8013],"class_list":["post-7886","manual_kb","type-manual_kb","status-publish","format-standard","hentry","manualknowledgebasecat-email","manualknowledgebasecat-errors-sending-messages","manual_kb_tag-email-deliverability","manual_kb_tag-email-authentication","manual_kb_tag-dmarc-policy","manual_kb_tag-sender-policy-framework","manual_kb_tag-smtp-authentication","manual_kb_tag-smtp-settings","manual_kb_tag-domainkeys-identified-mail","manual_kb_tag-secure-smtp","manual_kb_tag-sender-reputation","manual_kb_tag-smtp-mybox"],"_links":{"self":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/7886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb"}],"about":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/types\/manual_kb"}],"author":[{"embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/7886\/revisions"}],"predecessor-version":[{"id":7887,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/7886\/revisions\/7887"}],"wp:attachment":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/media?parent=7886"}],"wp:term":[{"taxonomy":"manualknowledgebasecat","embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manualknowledgebasecat?post=7886"},{"taxonomy":"manual_kb_tag","embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb_tag?post=7886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}