Am Donnerstag, 6. Mai 2021, 18:18:18 CEST schrieben Sie: So, checked more. Indeed, it is a bug in latest version of mutt. Looks like it is working on i386, but the version in amd64 is buggy.
For testing purposes I installed an older versionb of mutt, and Voila!, ewverything worked fine. I will file a bugreport to mutt. Thank you all for your help. Best regards and stay safe! Hans > Understood. Hmm, just tried mutt again and it can not delete files, telling > me, that "temporary files can not be written" in /var/mail. > > So it looks more that the file and directory permissions are set correctly, > and that means -> I have to take a look at mutt. > > Easiest way, just uninstall and reinstall, then check. If this does not > work, looking at permissions of mutt or similar. > > I will tell more as soon as I know. > > Best > > Hans