Recipient could not be found in the Domino Directory

I have enabled the setting in the Domino Directory - “Verify that local domain recipients exist in the Domino Directory:” and this has cleaned up my dead mail in the mail.box. It is working as it was designed.Now my log has many lines like below, where the fake name was not accepted.

03/27/2008 01:43:30 PM SMTP Server: Mail for b986a@mydomain.com rejected for policy reasons. Recipient could not be found in the Domino Directory.

Is there away to stop from logging the rejection of all of these junk mails?

Thanks for your time.

JA

Subject: Recipient could not be found in the Domino Directory

It is suggested to use some sort of Antispam solution.