Hope someone can help.
We use a modified version of the inflex script for doing our mail
filtering. This was established by my old boss and was working very
well. But lately we have been getting a lot more spam and I want to be
able to add items to it to stop the flow of crap coming into inboxes.
Problem being is that my old boss forgot to show me how to add stuff to
it. I have tried googling a bit and have checked the project page, but
I am just not sure if I am looking at the right thing.
I am fine with this part:
# How do I add more file types to block?
Around line 306 of the /usr/local/inflex/inflex script. You will notice
there are lines which look like (note, filename scanning starts at ~325):
${cut} -d: -f2 ${tmpdir}/fileresults | ${grep} "MS-DOS executable" >>
${typebadfileslog}
${cut} -d: -f2 ${tmpdir}/fileresults | ${grep} "PC bitmap data"
gt;gt; ${typebadfileslog}
${cut} -d: -f2 ${tmpdir}/fileresults | ${grep} "AVI" gt;gt;
${typebadfileslog}
The file type descriptor (ie "AVI", "MPEG") is from the /etc/magic file.
Just add another ${grep} line to the end of the current list, with the
new /etc/magic tag type you're trying to block.
# Can I search for text strings in messages?
This is what I am not sure about. I am wanting to filter on the subject
messages if at all possible because we are getting al lot of the same spams.
Around line 343 of the /usr/local/inflex/inflex script you'll see the
entries required for scanning for text in your files. NOTE that I'm
using grep -ri, this is for [R]ecursive and case[I]nsensitive scanning.
You can change this as you wish.
#grep -ri "Kill the boss" ${tmpdir}/* gt;gt; ${textbadfileslog}
grep -ri "> > > >" ${unpackdir}/* gt;gt; ${textbadfileslog}
I will continue digging aorund and mulling through the script as well to
find some hints, but if anyone has any ideas or suggestions please let
me know.
Cameron
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