Jul 26 16:06:35 sane-dog postfix/smtpd[32191]: NOQUEUE: reject: RCPT
from xxx.xxx.co.nz[xxx.xx.xx.xx]: 450
<qwertyasdfgh@zimbra.appliance.localdomain>: Recipient address rejected:
Domain not found; from=<zimbra@[our domain]>
to=<qwertyasdfgh@zimbra.appliance.localdomain> proto=ESMTP
helo=<[our Server]>

1. How do I stop this repeatitivly sending
2. How do I stop this happening again.

Thanx