Niclas Gustafsson schrieb am Fri, Mar 08, 2002 at 11:53:05AM +0100: > Hi all, > > I have a probably easy question for the list! > > We run a some mail services for a couple of domains. > Currently we are using Sendmail that uses procmail to deliver to a > spooldir from which a POP3 server serves mail to our users. > > What I'd like to know is how I can seamless phase out our POP3 server, > a domain at a time, to the cyrus IMAP server.
These days I'm doing exactly the same. My method is: * cyrus services on a different machine (but could be the same, important are different IP addresses) * installing http://vergenet.net/linux/perdition/ at the front serving all users, redirecting them to *their* location, old or new * moving "box-by-box" (sometimes bulks of boxes) to the new machine/services thereby instructing perdition to keep up-to-date. This way no normal user will notice anything, just the experienced see that their POP/IMAP services change their banners ;-) Regards, Birger
