Migration

[Tanstaafl]

On 12/31/2018, 5:22:48 AM, Ignacio García <yo at ignasi.com> wrote:
> A totally different approach (that is imap-server agnostic), providing 
> that you're setting up those new accounts with temporary passwords 
> (which you know), before users change their passwords to their liking: 
> you could also use imapsync ( https://github.com/imapsync/imapsync) . We 
> here use it with a batch file and a text file containing all accounts to 
> do mass-migrations, usually at night, when there's little to none user 
> interaction with their mail accounts. I like this approach because mail 
> service never gets interrupted and we do programmed syncs all night in 
> case DNS propagation takes more than expected and mail still arrives to 
> the old server.

Or, you can use Master Passwords on both sides, and just do the
migration at your leisure. I did this when migrating from our dovecot
server to Office 365.

Next time I'll look at using a dovecot method (DSync? doveadm?) but
still using Master Passwords.