{"id":5775,"date":"2022-01-24T07:56:44","date_gmt":"2022-01-24T13:56:44","guid":{"rendered":"https:\/\/www.knownhost.com\/kb\/?p=5775"},"modified":"2022-08-23T09:44:00","modified_gmt":"2022-08-23T14:44:00","slug":"smtp-error-530","status":"publish","type":"post","link":"https:\/\/www.knownhost.com\/kb\/smtp-error-530\/","title":{"rendered":"SMTP Error 530"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 ez-toc-wrap-right 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\"><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: #212121;color:#212121\" 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: #212121;color:#212121\" 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 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.knownhost.com\/kb\/smtp-error-530\/#what_does_this_mean\" >What does this mean?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.knownhost.com\/kb\/smtp-error-530\/#how_to_fix_smtp_error_530\" >How to fix SMTP Error 530?<\/a><\/li><\/ul><\/nav><\/div>\n\n<p><strong>Description<\/strong>: Normally, an authentication problem. But sometimes it&#8217;s about the recipient&#8217;s server blacklisting yours, or an invalid email address.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"what_does_this_mean\"><\/span>What does this mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The specific error you receive should state the exact problem, but it may mean any of the following,<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Invalid authentication. (<em>Wrong password<\/em>).<\/li><li>Blacklisted\/Blocked IP Address.<\/li><li>Invalid recipient email address.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"how_to_fix_smtp_error_530\"><\/span>How to fix SMTP Error 530?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>As in almost every &#8216;fix&#8217;, you&#8217;ll want to ensure the email address is correct and properly spelled. Once confirming, ensure that your email user is properly authenticating (login and password). Then, make sure that your IP address is not blacklisted.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description: Normally, an authentication problem. But sometimes it&#8217;s about the recipient&#8217;s server blacklisting yours, or an invalid email address. What does this mean? The specific error you receive should state the exact problem, but it may mean any of the following, Invalid authentication. (Wrong password).Blacklisted\/Blocked IP Address.Invalid recipient email address. How to fix SMTP Error [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[578,380,291],"class_list":["post-5775","post","type-post","status-publish","format-standard","hentry","category-other","tag-578","tag-error","tag-smtp"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SMTP Error 530 - KnownHost<\/title>\n<meta name=\"description\" content=\"KnownHost self-hosted email guide to help you troubleshoot and fix SMTP Error 530 on your premium KnownHost server.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.knownhost.com\/kb\/smtp-error-530\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SMTP Error 530 - 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