rspamd mail seen but not in the userfolder

Almost certainly related to your authlib issues, Does not exist Service authlib

Authlib handles last mile translation to virtual mailboxes on the server. Is this the server that was severely corrupted? If so, you’d want to look at PostgreSQL and Authlib errors,

journalctl -n 50 -u postgresql 
journalctl -n 50 -u courier-authlib