Certificat<\/a> afin de crypter les donn\u00e9es.<\/p>\nAvec une petite modification du fichier main.cf, vous pouvez l'activer.<\/p>\n
\u00c0 cette fin, les ca-certificats doivent \u00eatre install\u00e9s sur le serveur. Pour les redhat et les centos, cela est d\u00e9crit dans les ca-certificats d'emballage
\nLes fichiers regroup\u00e9s peuvent \u00eatre trouv\u00e9s ici : \/etc\/pki\/ca-trust\/extracted\/pem\/tls-ca-bundle.pem at centos7 Vous devez avoir votre propre certificat et le sauvegarder dans \/etc\/postfix\/postfix_default.pem avec la cl\u00e9 et la racine crt.<\/p>\n
Entrez maintenant ces commandes :<\/p>\n
\npostconf -e smtp_tls_security_level=may\npostconf -e smtp_tls_cert_file=\/etc\/postfix\/postfix_default.pem\npostconf -e smtp_tls_key_file=\/etc\/postfix\/postfix_default.pem\npostconf -e smtp_tls_CAfile = \/etc\/pki\/ca-trust\/extracted\/pem\/tls-ca-bundle.pem\npostconf -e smtp_tls_mandatory_exclude_ciphers='aNULL, DES, RC4, MD5'.\n\npostconf -e smtpd_tls_security_level=may\npostconf -e smtpd_tls_key_file=\/etc\/postfix\/postfix_default.pem\npostconf -e smtpd_tls_cert_file=\/etc\/postfix\/postfix_default.pem\npostconf -e smtpd_tls_mandatory_protocols='!SSLv2, !SSLv3\npostconf -e smtpd_tls_protocols='!SSLv2, !SSLv3\npostconf -e smtpd_tls_mandatory_ciphers=high\npostconf -e smtpd_tls_mandatory_exclude_ciphers='aNULL, DES, RC4, MD5'.\npostconf -e tls_high_cipherlist='EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3: !aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA\".\n<\/pre>\nDor\u00e9navant, postfix crypte les donn\u00e9es vers d'autres serveurs qui le proposent.<\/p>\n
Mais assurez-vous que les options : <\/p>\n
Cette option est annonc\u00e9e par certains fournisseurs dans des publicit\u00e9s t\u00e9l\u00e9vis\u00e9es comme une livraison s\u00e9curis\u00e9e par courrier \u00e9lectronique. Veuillez noter qu'il ne s'agit bien s\u00fbr que d'un cryptage de transport, c'est-\u00e0-dire du chemin entre les deux serveurs de courrier. Le courrier \u00e9lectronique lui-m\u00eame est \u00e0 nouveau stock\u00e9 en texte clair sur le serveur de messagerie du destinataire.<\/p>","protected":false},"excerpt":{"rendered":"
Es ist immer sinnvoll die eMail Kommunikation zu verschl\u00fcsseln, gerade wenn man auch mobil unterwegs ist und in wlan Umgebungen eMails abruft oder schreibt. Denn hier lauert meist ein unbekannter, der die Kommunikation im Klartext mitschneidet. Mit simplen Einstellungen im eMailprogramm oder Smartphone kann man die Verschl\u00fcsselte Verbindung aktivieren. Somit ist die Verbindung vom eMailprogramm 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