SSH copy failure from Fedora server to any client

[74cmonty]

Hi,
I setup my first Fedora 29 server (for FreeIPA).

Now I need to copy a file to another client.
When I execute scp I get this in terminal (after entering password) and file is not
transferred:
[admin@pc7-cubi3 ~]$ scp [e-mail]:/tmp/client1.keytab
krb5.keytab
The authenticity of host 'ipa-master.biszumbitterenen.de (192.168.100.252)'
can't be established.
Password:
\033[0m\033[1;34m           /:-------------:\         \033[0m\033[1;34m
locadmin\033[0m\033[1m(a)\033[0m\033[0m\033[1;34mipa-master.biszumbitterenen.de\033[0m

I didn't experience any similar issue on other Linux distros (Arch, Debian, Suse).

Can you please advise what's causing this error?

THX