That looks good and I should be able to make the file from a database. However, when I put this

if (isin(from,"gmail.com")) then
     call feature_manual(.99, "Bad Sender")
end if

into the sf_mfilter_local.txt file in my surgemail directory, it does nothing. Am I missing something?

Version: Windows 5.3b2-2 Mar 11 2011 10:05:08 (Special pre-release version installed)