HowTo: Postfix with SPF

Reading Time: 4 minutes In this post, I would like to explain the usage of SPF (Sender Policy Framework), which could be used to prevent spam. SPF will use the DNS system to tell the receiving mail server, whether the sending server is allowed to send mails for this domain. As this is the basic concept, I will explain … Read more HowTo: Postfix with SPF

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