That was the solution, thank you very much!
Am Do. 11. Februar 2021 09:42 CET, Martijn Brinkers via Users <firstname.lastname@example.org> schrieb:
> after System upgrade now i have one more error. The encryption
> notification mail comes with no from address. This field is now
> blank. What ist going wrong?
The system sender and from address (which is used by the encryption notification) is now configurable. For various technical reasons, we could not set this to a default value (because we do not know the email domain of the system).
Can you try to set the notification sender and from (see advanced settings "System sender")
CipherMail email encryption
Email encryption with support for S/MIME,
OpenPGP, PDF Messenger and Webmail Messenger