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SP Development

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Postfix SMTP-Relay einrichten

In meinem heutigen Blog möchte ich dokumentieren und beschreiben, wie man via Postfix ein SMTP-Relay-Server für das Homelab einrichtet. Ein SMTP-Relay-Server ist im Prinzip eine Art Weiterleitung. Damit habe ich im Homelab, sagen wir in einem sonst gesicherten und abgeschirmten Bereich, eine Sammelstation für ausgehende E-Mails. Alle anderen Services im Homelab die beispielsweise Statusmeldungen und Reports per E-Mail versenden sollen, müssen dann nicht mehr aufs Internet zugreifen um zum E-Mail-Provider zu gelangen, sondern verwenden den internen Postfix-Server um E-Mails zu versenden. Und vorallem muss ich als Administrator zukünftig auch keine Benutzernamen und Passwörter mehr wissen.