Depends on the meaning of downtime. If downtime means SMTP service down and POP3/IMAP/WEBMAIL service down, then all you need to do is:
migrate the existing users to the new box, and when it's done, move the MX address (or take over the ip of the old mail server) so that all new mail drops down to the new server. There will be no downtime excpt that subscribers will not be able to see old mail or mail pending in the old mailboxen. Then comes the laborious process of moving the mailboxes over to the new box. This can take a while, but at least your clients won't all be complaining about SMTP/POP/IMAP server not responding issues. On Tue, 2 Oct 2001, Reynald I. Ngo wrote: > At 10:56 PM 10/1/2001 +0800, Orlando Andico wrote: > > Orly is true. On an ISPs prospective, you can put down any server > you want but not the mail server. > > >Ahem. That's true. *scratch* *scratch* > >It's a major pain to migrate gazillions of users to a new system without > >downtime. > > > --- > Reynald I. Ngo > [EMAIL PROTECTED] > > "Best things in life are free... LINUX!" > > _ > Philippine Linux Users Group. Web site and archives at http://plug.linux.org.ph > To leave: send "unsubscribe" in the body to [EMAIL PROTECTED] > > To subscribe to the Linux Newbies' List: send "subscribe" in the body to >[EMAIL PROTECTED] > _ Philippine Linux Users Group. Web site and archives at http://plug.linux.org.ph To leave: send "unsubscribe" in the body to [EMAIL PROTECTED] To subscribe to the Linux Newbies' List: send "subscribe" in the body to [EMAIL PROTECTED]
