Postfix/Rejecting_mail_to_the_hostname

From http://archives.neohapsis.com/archives/postfix/2009-05/0808.html

> Now the problem is that if a spammer sends email directly to
> wmoliver@eul0001189.eu.verio.net it bypasses the third party spam filter
> and gets delivered. This has been happening.

Then don' use eul0001189.eu.verio.net as myhostname/mydestination, but:
eul0001189.eu.verio.net.invalid

and in virtual use:
oliver@gtwm.co.uk     wmoliver@eul0001189.eu.verio.net.invalid