sed -i '/^[^#]*$sa_spam_subject_tag/s/^/#/' /etc/amavisd/conf/20-debian_defaults
        sed -i 's/^\($final_spam_destiny.*= \).*/\1D_PASS;/' /etc/amavisd/conf/20-debian_defaults
 
        # Create default sieve script
        mkdir -p /var/lib/imap/sieve/global/
        cat > /var/lib/imap/sieve/global/default.script << EOF
require "fileinto";
if header :contains "X-Spam-Flag" "YES"
{
        fileinto "Spam";
}
if header :contains "X-Spam" "yes"
{
        fileinto "Spam";
}
EOF
        # Compile it
        /usr/lib/cyrus-imapd/sievec /var/lib/imap/sieve/global/default.script /var/lib/imap/sieve/global/default.bc
 

#!/bin/bash
set_spam_sieve ()
{
imap_stor=/var/spool/imap/
sieve_stor=/var/lib/imap/sieve/
user_sieve_folders=($(find $imap_stor -name Spam -type d -print | sed 's|'$imap_stor'|'$sieve_stor'|' | sed 's|/user||' | sed 's|/Spam|/|'))
for folder in ${user_sieve_folders[@]} ; do
    if [ -f $folder'USER.script' ] ; then
        cd $folder
        if [ "$(grep -c 'require.*include' 'USER.script')" -eq 0 ]; then 
            echo 'Inject  require "include";  '$folder'USER.script'
            sed -i '1i require "include";' 'USER.script'
            /usr/lib/cyrus-imapd/sievec 'USER.script' 'USER.bc'
            chown -R cyrus:mail $folder
        fi
        if [ "$(grep -c "include.*:global.*default" 'USER.script')" -eq 0 ]; then 
            echo 'Inject  include :global "default";  '$folder'USER.script'
            echo 'include :global "default";' >> $folder'USER.script'
            /usr/lib/cyrus-imapd/sievec 'USER.script' 'USER.bc'
            chown -R cyrus:mail $folder
        fi
        echo -e $folder'USER.script'
    else
        echo Creating new  $folder'USER.script'
        mkdir -p $folder
        cd $folder
        echo -e 'require ["include"];\ninclude :global "default";' > 'USER.script'
        /usr/lib/cyrus-imapd/sievec 'USER.script' 'USER.bc'
        ln -s 'USER.bc' 'defaultbc'
        chown -R cyrus:mail $folder
    fi
done
    sleep $SPAM_SIEVE_TIMEOUT 
    set_spam_sieve
}
set_spam_sieve

source : https://github.com/kvaps/docker-kolab