Migrate Dovecot email archive

[Tanstaafl]

On 6/20/2016 3:13 AM, Steffen Kaiser <skdovecot at smail.inf.fh-brs.de> wrote:
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> On Sun, 19 Jun 2016, Marco Usai wrote:
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>> Yesterday I'vemigrated Dovecot mail archive between two servers using the procedure below:
>> 1) Createon the new server the same email accounts existing on the old server.
>> 2) Transferthe "tarred" mail folder from the old to the new server.
>> For testingpurposes, on Outlook 2007 I've deleted a .pst cache file, forcing the client todownload all emails again.
>>
>> The switchwas absolutely transparent without any problem. All the emails were availableand Outlook 2007 noticed no changes.
>> Can Iconsider this a correct procedure or should I use some tools like Dsync ?

> If you do not change the mail storage format (Maildir -> dbox, or 
> something like that), do not change 32bit -> 64bit, big / little endian 
> a.s.o.
> 
> and if you make sure the old mailbox is not accessed, while you copy the 
> data over,
> 
> it should work :-)
> 
> In fact, I use "rsync".

Imapsync is easier. Made migration from dovecot to Office 365, then
back to dovecot painless and easy, and can be done while both systems
are live.