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Accepted Solution
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5 years ago
Prinzip gar nicht, ähnlich wie bei einem Briefumschlag kann man 'draufschreiben' was man will.
Gute Hinweise gibt aber schon mal der Mailheader:
https://www.verbraucherzentrale.de/wissen/digitale-welt/phishingradar/so-lesen-sie-den-mailheader-6077
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