Hello,
Is there a way to block special chars like:
An 'A' with a tile '~' above it?
Just looking for a special character is likely to false positive on every binary attachment. However, if you have specific words, you can use the character expansions I use in antidrug (which SA 3.0 uses as a part of it's default rules).
For example, for "A" I use "[EMAIL PROTECTED]" with the [\xE0-\xE6] representing the various accented versions of "A". 4 and @ are thrown in there for good measure.
You might want to check the character expansion notes at the top of antidrug.cf for others:
http://mywebpages.comcast.net/mkettler/sa/antidrug.cf
