Mein e-mail account liegt bei 1&1, installiert ist Thunderbird 60.0 (32 Bit)
Nach dem Absenden einer Mail, egal ob mit oder ohne Anhang, bekomme ich bei einer bestimmten Empfängeradresse immer eine Fehlermeldung. Vor ein paar Tagen hat alles noch super geklappt. Sende ich die Nachricht über den 1&1 Web mailer geht die Nachricht ohne Fehlermeldung raus.
Ich hoffe jemand kann helfen.
Hier die Fehlermeldung.
Code
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To: Silvano Caporicci <xxxx@xxxxx.it>
From: Michael Wolter <yy@yyyy.de>
Subject: AWEX
Message-ID: <a6d6f408-231e-3448-3db4-286349b61ea1@awex.de>
Date: Fri, 28 Sep 2018 11:44:49 +0200
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