Re: New version of iRedOS is now available, ships iRedMail-0.7.1.

You can define you own yum repository in iRedMail-x.y.z/conf/global, like below:

    export YUM_UPDATE_REPO="http://iredmail.org/yum/rpms/${DISTRO_VERSION}/"                        

Then iRedMail will install all addition RPM packages from defined mirror site.

Also, you can copy this kickstart file to your local network.