Filename.rules

[Mark]

This might seem to be a mail watch question but I think it's my .rules files
that are at fault.

I've followed the various pages
http://sourceforge.net/forum/forum.php?thread_id=1373718&forum_id=298819
That describe filename.rules, filename.rules.allowall.conf, filetype.rules
and filetype.rules.allowall.conf

But despite that when I attempt to release a blocked mail with attachment
mailscanner re-blocks it again. Can anyone offer idiot proof assistance ?

Thanks
M