In Host machine, I will download an open source software “MailArchiva 1.9.13” from sourceforge web site.
Save this file to local path as E:\My Utility\Application\mail\Archive\MailArchiva\OSE\
In Guest VM, click Devices –> Shared Folders… for creating or modifying shared folders.
In Settings page, click Add Shared Folders button
Switch to Other… in Folder Path field next to select a directory that it include the MailArchiva software.
Click OK button if we don’t want to change Folder Name or other attributes.
So does that the Guest VM has already added a shared folder now.
Create a directory “/sf_OSE” to use as mount point next to mount the share folder and explore it. We will see the MailArchiva software in CentOS platform.
Create a directory “mailarchiva_dist” for locating the extracted files from a compressed file
Execute an install script and bypass any registration except for memory in the setup process
We can do the command chkconfig –list | grep iptables to realize which run level enable iptables daemon when CentOS start up (# 1). 
In the current run level (# 2), we can view firewall status by command /etc/init.d/iptables status 
and temporarily stop iptables daemon by command /etc/init.d/iptables stop (# 3)
So does that we can open MailArchiva management by web browser.
Reference：
(# 1) If we want to specify which startup service will be disable on which run level, we can execute the command chkconfig --level 35 iptables off to disable iptables automatically on system boot.
(# 2) How to know what run level am I in? By command as /sbin/runlevel or who –r to know what happen.
(# 3) After stop iptables daemon and view status again, we can find out the firewall is not running now.
