hsphere-mail2-all-8 is included into and installed automatically with
H-Sphere 2.4.1 RC 2 update.
You don't need to update mail system separately when you update H-Sphere to version 2.4.1 RC 2 and up!
The update procedure is performed on CP server and updates all mail servers automatically.
Log into your control panel server as root: su -
Download the upgrade package from our site:
Linux: wget http://www.psoft.net/shiv/HS/u-hsmail-24.tgz
FreeBSD: fetch http://www.psoft.net/shiv/HS/u-hsmail-24.tgz