Question regarding new domains on server

Hi all,

I installed a new web/mailserver the last days.
OS: Debian 11
Mail config: dovecot/postfix with amavis (spamassassin, clamav...).

For a few domains, everything is working like it should.
In the mail headers I can see the spam classification etc.

For a new domain I added yesterday, the spam header entrys are not 
written.
For this domain the only header entry is X-Virus-Scanned: Debian 
amavisd-new at server3.xxx.xx

I am not aware that I added the domains used on my server directly to a 
config file.
I also searched on the internet but found nothing  if there is anything 
todo when a new domain is added to a system.

Maybe you can advise me what to do?
Do you need any config files to be shown?

Many thanks in advance,
Timo