Mailscanner 4.79-11-1 for CentOS (5.5 x64) ignoring filename rules?

Jules Field MailScanner at
Thu Aug 5 19:33:19 IST 2010

On 05/08/2010 19:26, Alex Crow wrote:
> On 05/08/10 19:06, Jules Field wrote:
>> That is entirely as expected, due to the rule
>> # Allow repeated file extension, e.g.
>> allow   (\.[a-z0-9]{3})\1$      -       -
>> which appears before the double-extension-check rule, as it causes it 
>> to allow files where people have accidentally doubled up the same 
>> extension.
>> Jules.
> Dear Jules,
> The trouble is, I also had this with a test such as "<some random ssl 
> cert>.crt.txt", which is certainly not repeated.
Yes, but .txt is probably allowed by a rule further up in the table.
> In fact, I've tried so many combinations and none of them have ever 
> been flagged (unless they've had exe or dll or the like in there 
> somewhere, when they don't trigger on the multiple extension but 
> instead on executable content.)
> I will try disabling the "repeat" rule and see what happens anyway.
Give that a try. If you still can't get "" stopped, then 
give me a shout and I'll take a look.


Julian Field MEng CITP CEng
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