For more details on qmail-remove, you may refer to the link below. http://www.linuxmagic.com/opensource/qmail/qmail-remove 1. You have to install the gcc compiler + libraries yum install gcc gcc-c++ 2. Download qmail-remove. wget http://www.linuxmagic.com/opensource/qmail/qmail-remove/qmail-remove-0.95.tar.gz 3. Untar the downloaded file. tar -zxvf qmail-remove-0.95.tar.gz 4. Then do the following. cd qmail-remove-0.95 make make install cp qmail-remove /usr/bin/ mkdir /var/qmail/queue/yanked…