https://bugs.kde.org/show_bug.cgi?id=465551
--- Comment #6 from Stephan Wezel <s.we...@web.de> --- Hi, i have re-checked it too. And it works now. it seems that either with an update of kde frameworks or kde-apps the bug is fixed. my current versions KMail (KDE Gear): 5.23.1 (23.04.1) KDE Frameworks: 5.106.0 Florian Evers used 5.105.0 for frameworks and 23.04.0 for KDE Gear where the bug occurred as well so my guess is that either with kde framework 5.106.0 or KDE Gear 23.04.1 the bug was fixed. Only the signature failes to be checked for old sent e-mails which either contains german umlaut (e.g. ΓΌ) in the e-mail subject or a file is attached with an name which contains german umlaut. But when such e-mail is re-saved as e.g. draft then the signature can be properly validated. So my guess that this problem was caused due an error how the signature was generated for e-mails which contained non ascii charactes either in subject or attachment names. So for me this bug is fixed. It seems that where a kind of duplicate of this bug. I found in the changelog of KDE Gears 5.23.1 following bug as fixed https://bugs.kde.org/show_bug.cgi?id=469304 -- You are receiving this mail because: You are watching all bug changes.