Christopher J. Buckley

Yesterday a mail-server I am responsible for suffered an unintentional DoS from an (unwitting) third-party. Here’s a quick script for Exim4 to clear out a specific domain/user from your mailqueue.

#!/bin/sh

if [ $1 ]; then
                echo "`exim4 -bpru | tr '\n' + | sed -e "s/++/=/g" | tr -d + |
                          tr = '\n' |
                grep "$1" | awk {'print $3'} | xargs exim4 -Mrm |
                         wc -l` E-Mails deleted"
        else
            echo "If you want to delete ALL the `exim4 -bpc` E-Mails on mail queue, give this command:"
            echo "exim4 -bpru | awk {'print $3'} | xargs exim4 -Mrm"
            echo ""
            echo "If you want to delete only mails with an specific sender/recipient, use:"
            echo "$0 [sender/recipient]"
fi