Hello Forum,
I forgot to write that I am a developer and the site
https://forums.koozali.org/index.php/topic,54724.0.html
of course I know and use it.
There are no different or new rpm's on both servers.
locale shows the correct encoding:
Germany:
LANG=de_DE.UTF-8
LC_CTYPE="de_DE.UTF-8"
LC_NUMERIC="de_DE.UTF-8"
LC_TIME="de_DE.UTF-8"
LC_COLLATE="de_DE.UTF-8"
LC_MONETARY="de_DE.UTF-8"
LC_MESSAGES="de_DE.UTF-8"
LC_PAPER="de_DE.UTF-8"
LC_NAME="de_DE.UTF-8"
LC_ADDRESS="de_DE.UTF-8"
LC_TELEPHONE="de_DE.UTF-8"
LC_MEASUREMENT="de_DE.UTF-8"
LC_IDENTIFICATION="de_DE.UTF-8"
LC_ALL=
I was now able to narrow down the problem.
All SME 10 are configured as an MTA and forwards the emails to the provider.
With the German provider
IONOS
1und1
I have a problem with the email.
With the German provider
Strato
not. I also tested this with other SME 10