Doku says: "File Extension Filter: By selecting the file extension filter option you can blackhole
or quarantine e-mails (with warnings) that contain certain types of files
based on their extensions (e.g., executables). To add file extensions, click the
plus icon in the Blocked File Extensions box and enter a critical file extension"
But there is no Button to decided beetween blackhole or quarantine.
Thanks Sven
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