{"id":8851,"date":"2024-06-24T07:59:08","date_gmt":"2024-06-24T07:59:08","guid":{"rendered":"https:\/\/www.webhi.com\/how-to\/?p=8851"},"modified":"2024-10-14T14:03:37","modified_gmt":"2024-10-14T14:03:37","slug":"installer-configurer-opendkim-ubuntu-debian-linux","status":"publish","type":"post","link":"https:\/\/www.webhi.com\/how-to\/fr\/installer-configurer-opendkim-ubuntu-debian-linux\/","title":{"rendered":"Comment Installer et Configurer OpenDKIM sur Ubuntu"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.webhi.com\/how-to\/gilrogre\/2024\/06\/opendkim_install_fr.jpg\" alt=\"Installer et configurer OpenDKIM sur Ubuntu 20.04 22.04 Debian 9 10\" class=\"wp-image-8859\" srcset=\"https:\/\/www.webhi.com\/how-to\/gilrogre\/2024\/06\/opendkim_install_fr.jpg 1200w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2024\/06\/opendkim_install_fr-300x169.jpg 300w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2024\/06\/opendkim_install_fr-1024x576.jpg 1024w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2024\/06\/opendkim_install_fr-768x432.jpg 768w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2024\/06\/opendkim_install_fr-150x84.jpg 150w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"introduction\">Introduction<\/h2>\n\n\n\n<p>DomainKeys Identified Mail (<strong>DKIM<\/strong>) est une m\u00e9thode d&#8217;authentification des e-mails con\u00e7ue pour d\u00e9tecter les adresses d&#8217;exp\u00e9diteur usurp\u00e9es dans les e-mails, une technique souvent utilis\u00e9e dans le phishing et le spam. DKIM permet \u00e0 une organisation de revendiquer la responsabilit\u00e9 d&#8217;un message d&#8217;une mani\u00e8re qui peut \u00eatre valid\u00e9e par le destinataire. <strong>OpenDKIM <\/strong>est une impl\u00e9mentation open-source de la sp\u00e9cification DKIM qui est largement utilis\u00e9e pour ajouter cette couche de s\u00e9curit\u00e9 aux syst\u00e8mes de messagerie.<\/p>\n\n\n\n<p>Ce guide vous guidera \u00e0 travers les \u00e9tapes d&#8217;installation et de configuration d&#8217;OpenDKIM sur un serveur Ubuntu. Nous couvrirons le processus d&#8217;installation, les d\u00e9tails de configuration, l&#8217;int\u00e9gration avec le serveur de messagerie Postfix, et les tests pour s&#8217;assurer que tout est correctement configur\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pr%C3%A9requis\">Pr\u00e9requis<\/h2>\n\n\n\n<p>Avant de commencer, assurez-vous d&#8217;avoir les \u00e9l\u00e9ments suivants :<\/p>\n\n\n\n<ol>\n<li>Un serveur Ubuntu (20.04 LTS ou version ult\u00e9rieure).<\/li>\n\n\n\n<li>Un acc\u00e8s root ou sudo au serveur.<\/li>\n\n\n\n<li>Un nom de domaine et le contr\u00f4le sur les param\u00e8tres DNS.<\/li>\n\n\n\n<li>Postfix install\u00e9 et configur\u00e9 sur votre serveur.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-1--mettre-%C3%A0-jour-les-paquets-syst%C3%A8me\">\u00c9tape 1 : Mettre \u00e0 Jour les Paquets Syst\u00e8me<\/h2>\n\n\n\n<p>Commencez par mettre \u00e0 jour les listes de paquets sur votre serveur Ubuntu pour vous assurer d&#8217;avoir les derni\u00e8res versions disponibles.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo apt update\n$ sudo apt upgrade -y<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-2--installer-opendkim-et-les-paquets-associ%C3%A9s\">\u00c9tape 2 : Installer OpenDKIM et les Paquets Associ\u00e9s<\/h2>\n\n\n\n<p>Ensuite, installez OpenDKIM et ses d\u00e9pendances en utilisant la commande suivante :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo apt install opendkim opendkim-tools -y<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-3--configurer-opendkim\">\u00c9tape 3 : Configurer OpenDKIM<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"cr%C3%A9er-le-r%C3%A9pertoire-de-configuration-dopendkim\">Cr\u00e9er le R\u00e9pertoire de Configuration d&#8217;OpenDKIM<\/h3>\n\n\n\n<p>Cr\u00e9ez un r\u00e9pertoire pour les fichiers de configuration et les cl\u00e9s d&#8217;OpenDKIM.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo mkdir \/etc\/opendkim\n$ sudo mkdir \/etc\/opendkim\/keys<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"configurer-opendkim\">Configurer OpenDKIM<\/h3>\n\n\n\n<p>Ouvrez le fichier de configuration principal d&#8217;OpenDKIM.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/opendkim.conf<\/code><\/pre>\n\n\n\n<p>Ajoutez les param\u00e8tres de configuration suivants au fichier :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">Syslog                  yes\nUMask                   002\nMode                    sv\nCanonicalization        relaxed\/simple\nExternalIgnoreList      refile:\/etc\/opendkim\/TrustedHosts\nInternalHosts           refile:\/etc\/opendkim\/TrustedHosts\nKeyTable                refile:\/etc\/opendkim\/KeyTable\nSigningTable            refile:\/etc\/opendkim\/SigningTable\nSocket                  inet:12345@localhost\nPidFile                 \/var\/run\/opendkim\/opendkim.pid\nUserID                  opendkim:opendkim\nTemporaryDirectory      \/var\/tmp<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"configurer-les-h%C3%B4tes-de-confiance\">Configurer les H\u00f4tes de Confiance<\/h3>\n\n\n\n<p>\u00c9ditez le fichier TrustedHosts pour inclure votre r\u00e9seau local et votre serveur de messagerie.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/opendkim\/TrustedHosts<\/code><\/pre>\n\n\n\n<p>Ajoutez les lignes suivantes :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">127.0.0.1\nlocalhost\n192.168.0.1\/24  # Remplacez par votre r\u00e9seau local\n*.votredomaine.com  # Remplacez par votre domaine<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"configurer-le-tableau-des-cl%C3%A9s\">Configurer le Tableau des Cl\u00e9s<\/h3>\n\n\n\n<p>\u00c9ditez le fichier KeyTable pour sp\u00e9cifier l&#8217;emplacement de vos cl\u00e9s DKIM.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/opendkim\/KeyTable<\/code><\/pre>\n\n\n\n<p>Ajoutez la ligne suivante (remplacez&nbsp;<code>votredomaine.com<\/code>&nbsp;par votre nom de domaine r\u00e9el) :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">mail._domainkey.votredomaine.com votredomaine.com:mail:\/etc\/opendkim\/keys\/votredomaine.com\/mail.private<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"configurer-le-tableau-de-signature\">Configurer le Tableau de Signature<\/h3>\n\n\n\n<p>\u00c9ditez le fichier SigningTable pour d\u00e9finir quels domaines doivent \u00eatre sign\u00e9s.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/opendkim\/SigningTable<\/code><\/pre>\n\n\n\n<p>Ajoutez la ligne suivante :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">*@votredomaine.com mail._domainkey.votredomaine.com<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-4--g%C3%A9n%C3%A9rer-des-cl%C3%A9s-dkim\">\u00c9tape 4 : G\u00e9n\u00e9rer des Cl\u00e9s DKIM<\/h2>\n\n\n\n<p>Naviguez vers le r\u00e9pertoire des cl\u00e9s et cr\u00e9ez un r\u00e9pertoire pour votre domaine.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ cd \/etc\/opendkim\/keys\n$ sudo mkdir votredomaine.com\n$ cd votredomaine.com<\/code><\/pre>\n\n\n\n<p>G\u00e9n\u00e9rez une nouvelle paire de cl\u00e9s DKIM en utilisant la commande suivante :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo opendkim-genkey -s mail -d votredomaine.com\n$ sudo chown opendkim:opendkim mail.private<\/code><\/pre>\n\n\n\n<p>Cela g\u00e9n\u00e9rera deux fichiers :<\/p>\n\n\n\n<ul>\n<li><code>mail.private<\/code>: La cl\u00e9 priv\u00e9e utilis\u00e9e par OpenDKIM pour signer les messages sortants.<\/li>\n\n\n\n<li><code>mail.txt<\/code>: La cl\u00e9 publique qui sera ajout\u00e9e \u00e0 vos enregistrements DNS.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-5--ajouter-la-cl%C3%A9-publique-dkim-au-dns\">\u00c9tape 5 : Ajouter la Cl\u00e9 Publique DKIM au DNS<\/h2>\n\n\n\n<p>Ouvrez le fichier&nbsp;<code>mail.txt<\/code>&nbsp;et copiez son contenu.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ cat mail.txt<\/code><\/pre>\n\n\n\n<p>Vous verrez quelque chose comme ceci :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">mail._domainkey.votredomaine.com. IN TXT \"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDmt+8iyK2xwLth...\"<\/code><\/pre>\n\n\n\n<p>Connectez-vous \u00e0 votre fournisseur DNS et cr\u00e9ez un nouvel enregistrement TXT avec les d\u00e9tails suivants :<\/p>\n\n\n\n<ul>\n<li><strong>Nom<\/strong>:&nbsp;<code>mail._domainkey<\/code><\/li>\n\n\n\n<li><strong>Type<\/strong>:&nbsp;<code>TXT<\/code><\/li>\n\n\n\n<li><strong>Valeur<\/strong>: (Collez le contenu du fichier&nbsp;<code>mail.txt<\/code>)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-6--configurer-postfix-pour-utiliser-opendkim\">\u00c9tape 6 : Configurer Postfix pour Utiliser OpenDKIM<\/h2>\n\n\n\n<p>\u00c9ditez le fichier de configuration principal de Postfix pour int\u00e9grer OpenDKIM.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/postfix\/main.cf<\/code><\/pre>\n\n\n\n<p>Ajoutez les lignes suivantes \u00e0 la fin du fichier :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">milter_default_action = accept\nmilter_protocol = 6\nsmtpd_milters = inet:localhost:12345\nnon_smtpd_milters = inet:localhost:12345<\/code><\/pre>\n\n\n\n<p>Enregistrez et fermez le fichier.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-7--d%C3%A9marrer-et-activer-opendkim\">\u00c9tape 7 : D\u00e9marrer et Activer OpenDKIM<\/h2>\n\n\n\n<p>D\u00e9marrez le service OpenDKIM et activez-le pour qu&#8217;il se lance au d\u00e9marrage.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo systemctl start opendkim\n$ sudo systemctl enable opendkim<\/code><\/pre>\n\n\n\n<p>Red\u00e9marrez Postfix pour appliquer les modifications.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo systemctl restart postfix<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%C3%A9tape-8--tester-votre-configuration\">\u00c9tape 8 : Tester Votre Configuration<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"envoyer-un-e-mail-de-test\">Envoyer un E-mail de Test<\/h3>\n\n\n\n<p>Envoyez un e-mail de test \u00e0 une adresse e-mail externe (par exemple, Gmail ou Yahoo) pour v\u00e9rifier si la signature DKIM fonctionne.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"v%C3%A9rifier-les-en-t%C3%AAtes-de-mail\">V\u00e9rifier les En-t\u00eates d&#8217;E-mail<\/h3>\n\n\n\n<p>Apr\u00e8s avoir re\u00e7u l&#8217;e-mail de test, v\u00e9rifiez les en-t\u00eates d&#8217;e-mail pour l&#8217;en-t\u00eate&nbsp;<code>DKIM-Signature<\/code>. Cet en-t\u00eate indique que l&#8217;e-mail a \u00e9t\u00e9 sign\u00e9 par OpenDKIM.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"v%C3%A9rifier-la-signature-dkim\">V\u00e9rifier la Signature DKIM<\/h3>\n\n\n\n<p>Utilisez un outil de v\u00e9rification DKIM en ligne (par exemple, DKIMCore, MXToolbox) pour v\u00e9rifier la signature DKIM. Entrez le s\u00e9lecteur (<code>mail<\/code>) et votre domaine (<code>votredomaine.com<\/code>) pour v\u00e9rifier si la cl\u00e9 publique est correctement configur\u00e9e dans votre DNS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"d%C3%A9pannage\">D\u00e9pannage<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"v%C3%A9rifier-les-journaux-dopendkim\">V\u00e9rifier les Journaux d&#8217;OpenDKIM<\/h3>\n\n\n\n<p>Si vous rencontrez des probl\u00e8mes, v\u00e9rifiez les journaux d&#8217;OpenDKIM pour des messages d&#8217;erreur.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo journalctl -u opendkim<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"assurer-les-permissions-correctes\">Assurer les Permissions Correctes<\/h3>\n\n\n\n<p>Assurez-vous que l&#8217;utilisateur&nbsp;<code>opendkim<\/code>&nbsp;a les permissions correctes pour les fichiers de cl\u00e9.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo chown -R opendkim:opendkim \/etc\/opendkim\/keys<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"valider-la-configuration-dns\">Valider la Configuration DNS<\/h3>\n\n\n\n<p>V\u00e9rifiez \u00e0 nouveau vos enregistrements DNS pour vous assurer que la cl\u00e9 publique DKIM est correctement ajout\u00e9e.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"red%C3%A9marrer-les-services\">Red\u00e9marrer les Services<\/h3>\n\n\n\n<p>Si des modifications sont apport\u00e9es aux fichiers de configuration, red\u00e9marrez les services OpenDKIM et Postfix.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo systemctl restart opendkim\n$ sudo systemctl restart postfix<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2>\n\n\n\n<p>Configurer DKIM avec OpenDKIM sur un serveur Ubuntu am\u00e9liore la s\u00e9curit\u00e9 de vos e-mails en v\u00e9rifiant l&#8217;authenticit\u00e9 de vos messages. En suivant les \u00e9tapes d\u00e9crites dans ce guide, vous pouvez installer, configurer et int\u00e9grer avec succ\u00e8s OpenDKIM avec votre serveur de messagerie Postfix. Surveillez et mettez r\u00e9guli\u00e8rement \u00e0 jour vos cl\u00e9s DKIM et vos enregistrements DNS pour maintenir un environnement de messagerie s\u00e9curis\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction DomainKeys Identified Mail (DKIM) est une m\u00e9thode d&#8217;authentification des e-mails con\u00e7ue pour d\u00e9tecter les adresses d&#8217;exp\u00e9diteur usurp\u00e9es dans les e-mails, une technique souvent utilis\u00e9e dans le phishing et le spam. DKIM permet \u00e0 une organisation de revendiquer la responsabilit\u00e9 d&#8217;un message d&#8217;une mani\u00e8re qui peut \u00eatre valid\u00e9e par le destinataire. OpenDKIM est une impl\u00e9mentation ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/www.webhi.com\/how-to\/fr\/installer-configurer-opendkim-ubuntu-debian-linux\/\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[31,287],"tags":[],"yoast_head":"\n<title>Comment Installer et Configurer OpenDKIM sur Ubuntu - WebHi Tutorials &amp; Documentations<\/title>\n<meta name=\"description\" content=\"installer et configurer OpenDKIM sur Ubuntu pour am\u00e9liorer la s\u00e9curit\u00e9 des e-mails avec l&#039;authentification DKIM. 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