Certain Mailspect packages (i.e. Standard) are not including the Mailshell bundled. In order to install or update Mailshell SDK please find instructions bellow:

1) stop MPP

cd /usr/local/MPP
./mppd -s

2) Download and install conf.tar.gz / libspamcatcher for OS of choice

mkdir -p /usr/local/MPP/mailshell
cd /usr/local/MPP/mailshell
rm -rf conf libspamcatcher.*

For Linux / i386:

wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/conf.tar.gz
wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/linux/i386/libspamcatcher.so.0.0.0

tar xzvf conf.tar.gz
cp -f libspamcatcher.so.0.0.0 /usr/lib

For Linux / amd64:

wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/conf.tar.gz
wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/linux/amd64/libspamcatcher.so.0.0.0

tar xzvf conf.tar.gz
cp -f libspamcatcher.so.0.0.0 /usr/lib64

For OS X Universal Binary:

curl -O ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/conf.tar.gz
curl -O ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/osx/libspamcatcher.0.0.0.dylib

tar xzvf conf.tar.gz
cp -f libspamcatcher.0.0.0.dylib  /usr/lib

For FreeBSD 6 / i386:

wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/conf.tar.gz
wget -c ftp://ftp.messagepartners.com/pub/mailshell/spamcatcher-6.2.0/freebsd6/i386/libspamcatcher.so.0

tar xzvf conf.tar.gz
cp -f libspamcatcher.so.0 /usr/local/lib

For SunOS /SPARC:

wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/conf.tar.gz
wget -c ftp://ftp.messagepartners.com/pub/mailshell/spamcatcher-6.2.0/solaris/sparc/libspamcatcher.so.0.0.0

gzip -d conf.tar.gz | tar -xvf -
cp -f libspamcatcher.so.0.0.0 /usr/lib

For SunOS / i386:

wget -c ftp://ftp.mailspect.com/pub/mailshell/spamcatcher-6.2.0/conf.tar.gz
wget -c ftp://ftp.messagepartners.com/pub/mailshell/spamcatcher-6.2.0/solaris/i386/libspamcatcher.so.0.0.0

gzip -d conf.tar.gz | tar -xvf -
cp -f libspamcatcher.so.0.0.0 /usr/lib

3) start mppd

cd /usr/local/MPP
./mppd

4) update Mailshell

/usr/local/MPP/mailshellupdate

5) make sure there is a cronjob for Mailshell update

crontab -e
# add the following line to cronjob list
15 */2 * * * /usr/local/MPP/mailshellupdate  > /dev/null 2>&1 </dev/null