{"version":"1.0","provider_name":"Charles&#039; Blog","provider_url":"https:\/\/crossan007.dev\/blog","author_name":"crossan007","author_url":"https:\/\/crossan007.dev\/blog\/author\/crossan007\/","title":"SharePoint 2016 SMTP Authentication - Charles&#039; Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\"><a href=\"https:\/\/crossan007.dev\/blog\/microsoft-sharepoint\/sharepoint-2016-smtp-authentication\/\">SharePoint 2016 SMTP Authentication<\/a><\/blockquote>\n<script type='text\/javascript'>\n<!--\/\/--><![CDATA[\/\/><!--\n\t\t\/*! This file is auto-generated *\/\n\t\t!function(d,l){\"use strict\";var e=!1,n=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var r,i,a,s=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),c=0;c<n.length;c++)n[c].style.display=\"none\";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(a=parseInt(t.value,10)))a=1e3;else if(~~a<200)a=200;r.height=a}if(\"link\"===t.message)if(i=l.createElement(\"a\"),a=l.createElement(\"a\"),i.href=r.getAttribute(\"src\"),a.href=t.value,o.test(a.protocol))if(a.host===i.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",t,!1),d.addEventListener(\"load\",t,!1);function t(){if(!n){n=!0;for(var e,t,r=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),i=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),a=l.querySelectorAll(\"iframe.wp-embedded-content\"),s=0;s<a.length;s++){if(!(e=a[s]).getAttribute(\"data-secret\"))t=Math.random().toString(36).substr(2,10),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t);if(r||i)(t=e.cloneNode(!0)).removeAttribute(\"security\"),e.parentNode.replaceChild(t,e)}}}}(window,document);\n\/\/--><!]]>\n<\/script><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/crossan007.dev\/blog\/microsoft-sharepoint\/sharepoint-2016-smtp-authentication\/embed\/\" width=\"600\" height=\"338\" title=\"&#8220;SharePoint 2016 SMTP Authentication&#8221; &#8212; Charles&#039; Blog\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe>","description":"Edit:\u00a0It appears that this has been fixed in KB 3191880\u00a0: SharePoint outbound email messages\u00a0incorrectly try to authenticate to SMTP servers that support Generic Security Service Application Program Interface (GSSAPI), Kerberos, or NTLM authentication. This may prevent email messages\u00a0from being sent. After you install this update, SharePoint sends email messages\u00a0anonymously without authentication. Recently I encountered an &hellip; Continue reading &rarr;"}