Well, we are into our migration now and we have successfully migrated two mail servers that lived on old SunBlade 100's, about 600 or so users. It took a bit longer than planned because imapsync just beat the hell out of the processors on the box. We could only move about 8 users at a time from each box.
We did a replace of the shadow password with a known to login to the source box. We created a migration domain on the Zimbra server and a migration admin account. Once the e-mail was migrated, we switched the users to the correct domain. It worked great as far as that is concerned. Just this morning, I finally found this wiki page
Split Domain - Zimbra :: Wiki that is helpful for others.
The login info you gave me about using the full name and migration domain to login to the web portal worked. Thanks. Didn't think about that at the time. I was running on too little sleep by then.
We have refined our process. Due to users being able manage their mail how they want, we could not account for all of the combinations that we would find. So instead of trying to get all of their mail, we are only getting their inboxes and providing instructions to the users on how to use a thick client to migrate their own mail. It greatly sped up what we are doing and removed any guess work on whether or not we got everything. It puts that responsibility on the user who should be savvy enough to figure it out.
We are running two servers, one is open source for a particular group of users and the other is the Network Edition for a different group of users. We started migrating to the open source first. Thanks for the info to help get us going. Now if only the faculty would get out of our way, we can continue the migrations.
