Spam full of random words not being stopped

[Michael Keightley]

Been getting lots of Spam recently which just contains lots of random words.
These aren't being marked as Spam (using MailScanner-4.25-14 + SA-2.61).
I've attached a couple of examples.  Is there anyway to stop this stuff?

Michael

--
Michael Keightley <Michael.Keightley at quadstone.com>    Tel: +44 131 240 3137
Systems Manager, Quadstone Limited,                    Fax: +44 131 220 4492
16 Chester Street, Edinburgh EH3 7RA, Scotland         http://www.quadstone.com
-------------- next part --------------
An embedded message was scrubbed...
From: "West Anita" <iqwhekk at cnnic.net.cn>
Subject: Re: OEMHWQ, the storm cloud
Date: Thu, 15 Jan 2004 11:33:04 -0500
Size: 3868
Url: http://lists.mailscanner.info/pipermail/mailscanner/attachments/20040116/05a7cc89/attachment.mht
-------------- next part --------------
An embedded message was scrubbed...
From: "Paul Mclaughlin" <cyqydyw at msn.com>
Subject: chromosphere cistern ecstasy aviate caustic
Date: Thu, 15 Jan 2004 13:27:08 -0700
Size: 5571
Url: http://lists.mailscanner.info/pipermail/mailscanner/attachments/20040116/05a7cc89/attachment-0001.mht