Criminals send fake invoices that appear to come from a company's own domain. Which DNS entry lets receiving mail servers check whether a sending server is authorised to send mail for that domain?
Des criminels envoient de fausses factures qui semblent provenir du domaine même d'une entreprise. Quelle entrée DNS permet aux serveurs de messagerie destinataires de vérifier si un serveur expéditeur est autorisé à envoyer du courrier pour ce domaine ?
Answers
AAn SPF policy published as a TXT recordUne politique SPF publiée dans un enregistrement TXT
BA second MX record pointing to a backup serverUn second enregistrement MX pointant vers un serveur de secours
CA CNAME pointing to the web serverUn CNAME pointant vers le serveur web
DA shorter TTL on the A recordUn TTL plus court sur l'enregistrement A
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