On Mon, 25 Oct 2004 10:56:13 +0530 (IST), [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Hi list, > > I have two servers: (Red Hat 9, Send mail 8.12, Squirrelmail) > 1. Mail Server (ns1) > 2. Backup of Mail Server (ns2) > > Now in case of failure of My first mail server(ns1), I should get 2nd > server (ns2) to take over.
OK, Let me tell you what an ideal email system would look like. This assumes you have $$$ to burn, hence feel free to chip off what you like. 0. For the switching of the LAN 2 x Cisco 3570 Gigabit stackable switches. Each box should have one NIC on one switch and the other NIC on the other. These are stackable switches, hence I believe no port-channeling is needed. 1. At the front: a Loadbalancer in HA configuration. Cisco CSS is preferred, but there are others too (even Linux based). 2. A number of high-end servers behind, with an MTA (Courier will be my choice). If I were buying, I'd go for IBM x-336 or HP DL360 servers. Dual processor, dual disk (in RAID 1), dual NIC (in bonded config). Maildirs exported from a central place via NFS. 3. A NAS. NFS exports for the mail spool. Redundancy in the NAS is another topic altogether. Vendor: EMC. 4. (1) and (2) Connected to the internet via a fat redundant pipe. OSPF is the best to load balance between the redundant pipes. You should have 2 x Cisco 2621 routers, in HA configuration again. 5. Replicate (1) and (2) with another ISP. 6. Dual power supply, connected to different providers (say BEST and REL, for example). Dual generators. Dual UPS. Basically, two of everything. 7. Enjoy the five-nines uptime :) 8. Wonder whether the investment is worth it or not. Binand Binand ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ linux-india-help mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/linux-india-help
