LDAP Autorisation with @domainname in Username

Dear Community,

hope you are well :slight_smile:
I have a small question for LDAP Auth.

If a try to login with @rightdomainname or @wrongdomainname, the Login Screen is in a loop.
The still stands “Connection in Progress”.

In the logfile are entrys, that i authenticated in my “guest” domain.

Is there any way that i get an error if the username (with@domain) is no in LDAP?