> On 13/05/2026 20:31 EEST Bryan Simmons via dovecot <[email protected]> 
> wrote:
> 
>  
> Moving postfix and dovecot to a new server including all current users 
> and emails.  There exists several dovecot files in each user mail directory:
> 
> dovecot.index
> dovecot.index.cache
> dovecot.index.log
> dovecot-keywords
> dovecot.list.index.log
> dovecot.mailbox.log
> dovecot-uidlist
> dovecot-uidvalidity
> dovecot-uidvalidity.612d3d34
> 
> Should these files be migrated also or will dovecot recreate them as needed?
> 
> Thank you, Bryan
> 

https://doc.dovecot.org/2.4.4/core/admin/migration.html#migrating-mailboxes

I would recommend seeing this. Depending on your mailbox format, it can be 
important that those files are copied, but I would suggest doveadm/imap based 
migration.

Aki

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