so, if somebody has mail.mydomain.com in their outlook if one server is down they can still get there mail via the other server
also web mail, so if someone was to go to mail.mydomain.com via http, if one server was down it would take them to the next
any help would be appreciated!
You can use DNS to failover the users. Setup like this:
smtp.domain.com 600 A ip.ad.re.ss webmail.domain.com 600 A ip.ad.re.ss
When the machine at ip.ad.re.ss goes down, you (or some watchdog script) dynamically update the A records above to ip.ad.re.s2 of the datacenter machine.
delegate the sub-domains smtp and webmail as zones, and make them dynamic zones, leaving the parent zone domain.com static.
Users will have a slight bump while the stale A records expire from their DNS caches during 600 seconds (or shorter), but after that, they will not know the difference.
And exactly the same action works when ip.ad.re.ss comes back on line.
Len
_____________________________________________________________________ http://MenAndMice.com/DNS-training : Chicago; Wash DC; Atlanta http://IMGate.MEIway.com : free anti-spam gateway, runs on 1000's of sites
To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
