JMAIL.CO.JP System Architecture

3Com 10/100 Hubs
From the High-Speed Network Bandwidth at the Digital Island hosting facilities our system starts with a pair of 3Com hubs with standard 10 Mbps and/or 100 Mbps power. These hubs keep servers or devices on the same network.

Sun Microsystems E250
JMAIL users first get routed to our Sun Microsystems E250 mysql database server. This machine is the:


Sun Microsystems E450
Our first E450 server is the workhorse of JMAIL. It handles all the incoming and outgoing mail and web traffic for webmail interface. This machine is the:


Sun Microsystems E450
Our second E450 server is also responsible for running Newsgroups (JuseNet.com - coming soon!) This machine is the

  • Webmail Server (Apache).
  • Qmail incoming / outgoing server.
  • Mysql database server.
  • Newsgroup server.
  • and has two 400mhz Ultra chips, 2 gigabytes ram

3Com Gigabit Switch
Our 3Com gigabit switch is involved in making our internal JMAIL network fast, fast, fast.

Network Appliance F740 Filer
The center piece of our JMAIL network infrastructure is our Network Appliance F740 File server with over 777 gigabytes currently online and being served. This machine is:

  • One big hard disk!
  • Reliable with 99.99% uptime and data integrity.
  • The industry standard for webmail providers, including Yahoo!
  • Hassle free with hot-swappable drives make upgrades and replacements.

Sun Microsystems Ultra 1 Server
This Sun Ultra 1 server is an apache webserver with:

  • JMAIL PRO Webserver.
  • Apache.
  • Ncftp.
  • Secondary DNS.

Dell Dual Pentium Linux Server
This Dell server acts as the primary DNS machine for our system

  • Primary DNS

VA Linux Dual Pentium Linux Server
This VALinux server acts as a standalone qmail incoming mail server

  • qmail incoming mail server

VA Linux Dual Pentium Linux Server
This is the newest machine purchased for professional webhosting with JMAIL Pro and FreeMail@YourDomain service. This machine is:

  • JMAIL PRO Webserver.
  • Ncftp FTP server.