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    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS.

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    Resolved Error code: (26) DNS lookup failure, failed SPF check for some incoming mails

    Dear all, I'm running a new Linux server with Plesk installed. Here some data: Linux: Ubuntu 20.04.3 LTS Plesk: Plesk Obsidian Version 18.0.39 Extension: Plesk Email Security Postfix Note: I use a standard installation of Ubuntu and Plesk through the hoster. So I found the following log in my...
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