Huge Greylist MySQL table

Hi,

I am using greylist with qmail successfully for some time, but I have
noticed that the MySQL tables keeps growing and growing. Now it has more
than 1GByte already. I think this will probably slow down my server.

Is there some kind of "maintenance script" for greylist available ? If
not, what records can I delete from the database myself ?

Thanks in advance.

Regards,

Denio A. Lindo - Consultant
Desktop Internet Services