Yes, labelsystems.es can receive emails.
No, labelsystems.es is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
217.160.0.251
MX records
mx00.ionos.es
212.227.15.41
mx01.ionos.es
217.72.192.67