deleting old email forwarders doesn't stop spam

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http://forums.cpanel.net – I keep a large number of email forwarders and have deleted some of the older ones a long time ago. However emails are still being sent to those old addresses by spammers. They are received and stored by my domain host, or discarded with an undeliverable notice to sender, depending on the cpanel setting. The cpanel setting is not too obvious. It is found at the bottom of the forwarder screen as a link where it says: If you wish to set your default address, or "catch-all," please click here to be taken to the Default Address page. The link is to the following cpanel screen: Code: (HowTos)