What Attachments do you block?
These filters will bounce any message that contains a file with a particular extension. These
filters work well at blocking PC email viruses and this is why we use them. For instance, there is no reason
to be sending a .exe file through email (it should be zip'd prior to sending). The filter checks all MIME parts for a Content-Type
header with a "name" parameter that ends with the extension or a Content-Disposition header with a
"filename" parameter than ends with the extension. They also check for uuencoded attachments and
check for unusual headers that Outlook and Outlook Express will interpret as being executables. Finally
the CLSID filter blocks attachments with names that end with a }. So files with the following extensions are blocked; .bat,
.com, .exe, .htm, .html, .lnk, .pif, .scr, .vbs, and CLSID
SPAM index
Black Lists
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