Postfix cant receive (ubuntu)

I've sent him a PM and asked him if he wants this address to be removed. Basically, someone tried to send an email 13 years ago to that address as that's what the log means and I guess that neither the thread opener nor the new poster remembers what this email was about And when @NordicAlex created that address 10 years ago and the email was sent 13 years ago, then it was probably even sent to someone who had that email address before the current poster used it.