How about Clustering http://www.iwebhardware.com/servers/clusters.html. We did it in the Military for exchange.
Paul -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Orin Wells Sent: Sunday, January 26, 2003 11:27 PM To: [EMAIL PROTECTED] Subject: [IMail Forum] Mirroring an iMail server This week the server farm where we have our iMail server suffered some significant problems. Several of their servers were attacked which contributed to the reputed Internet slowdown and they had significant problems with some Cisco routers which were changed out about three to four time. In the muck up we had our server out intermittently and for one period virtually overnight while they tried to fix everything. The question has been posed "what about your back up plans fellows?" This has given us pause to ask the question how can we provide a mirror for the iMail server? If so how does it work? If anyone has done this, would you mind sharing the techniques and strategies for setting it up and making it work seamlessly? It is apparent to me the DNS servers are key to it. If Server A is down then Server B gets the email through two address entries I would guess. This must mean we have to have a mirrored set of email accounts on both servers and make sure they are kept in sync. So when this happens with some of the mail for client X on server A and some on server B how does it get merged? Or does it? If not how can the client be sure of picking up all of his e-mail. What if you have unique IP addresses for each email domain? How is that all sorted out? Do you have a duplicate set for the second server or do you set up virtual hosts on the second server just to pick up the mail? You can tell I don't even know enough in this area to be too dangerous. 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/ 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/
