{"version":"1.0","provider_name":"Bancomail Blog","provider_url":"https:\/\/www.bancomail.com\/blog","author_name":"Andrea Mazzeo","author_url":"https:\/\/www.bancomail.com\/blog\/author\/andrea\/","title":"Validation d\u2019emails B2B : que se passe-t-il lorsqu\u2019on interroge un serveur SMTP - Bancomail Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Vdx3pMuyH8\"><a href=\"https:\/\/www.bancomail.com\/blog\/fr\/validation-email-b2b-serveur-smtp\/\">Validation d\u2019emails B2B : que se passe-t-il lorsqu\u2019on interroge un serveur SMTP<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.bancomail.com\/blog\/fr\/validation-email-b2b-serveur-smtp\/embed\/#?secret=Vdx3pMuyH8\" width=\"600\" height=\"338\" title=\"&#8220;Validation d\u2019emails B2B : que se passe-t-il lorsqu\u2019on interroge un serveur SMTP&#8221; &#8212; Bancomail Blog\" data-secret=\"Vdx3pMuyH8\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.bancomail.com\/blog\/wp-content\/uploads\/2025\/11\/Bancomail-Email-Validation.png","thumbnail_width":970,"thumbnail_height":540,"description":"V\u00e9rifier un email consiste \u00e0 interroger les serveurs du domaine et analyser les r\u00e9ponses SMTP pour distinguer adresses valides, inexistantes ou \u00e0 risque (catch-all, disposable, greylisting). Bancomail effectue ces contr\u00f4les \u00e0 grande \u00e9chelle chaque jour, en filtrant des cas comme MX manquant ou rejet exp\u00e9diteur pour r\u00e9duire les rebonds et le risque de blacklist. Si un serveur ne r\u00e9pond pas ou accepte tout, la donn\u00e9e n\u2019est pas fiable."}