By default Gradwell's Email Spam Scanner (SpamAssassin) scans emails upto 250 KB in size, this document discusses how to change this limit so that SpamAssassin scans emails upto 400 KB in size.
You will need to be able to change your MX records to use the new inbound email servers to filter your email.
You can change your MX records via the Hosting Control Panel, you may have to create a new Zone File first in order to make the changes.
You will need to change the default MX records from
Once the zone file has been updated and reloaded on our network, your email will be filtered via the new servers and emails upto 400 KB will be scanned.