Blocking custom file extension is not working

Andrew Colin Kissa andrew at
Fri Feb 5 13:53:20 UTC 2016

On 05 Feb 2016, at 3:41 PM, Pieter Goris <Pieter.Goris at> wrote:

> Now the question is why dll are blocked but not the ones sent by the test system?

That is because, the test system is just a bogus grand standing system trying to get
you to buy their "anti spam" solution instead.

They are sending a text file as the supposed .dll file, if they sent an actual .dll file
your system would block it because of the mime check.

So all in all their supposed attack would never work.

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