Merging maildirs

[Daniel Tröder]

On 08/27/2015 16:26, Petter Gunnerud wrote:
> Hi List How do I merge files from one maildir into another maildir?
> 
> Long version: I've been using dovecot/postfix for a 12 user
> environment for several years, and today was the first time I ran
> into an issue I could not solve from reading the documentation.
> 
> The server is gentoo running on esxi. A few times a year I've made a
> snapshot of the server and copied the files to my home esxi server as
> a full system backup.
> 
> 5 days ago the internet connection at the office broke, and I decided
> to power on the last copy of the server at my home and change public
> dns so that users could access their new mails via webmail from this
> spare server. (I didn't allow imap through firewall.) Now the network
> at the office is back. DNS is updated so that mails are delivered to
> the office server again. But all the mails sent / received during
> those 5 days is only at my house. How can I merge those into the
> office server?I'd like to do this as a server administrator. I do not
> want to have each user forward the mails to them self from the
> temporarily webmail. I tried to just copy the mail files on my own
> account - like I did once when I used courier-imap, but that did not
> work with dovecot. I hope someone has an idea of how to solve this.
Just using rsync should work - I've done it before. You'll have to check
the file system permissions.

The cleaner way would be to use imapsync or Dovecots dsync.

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