Best way to move mail from one server to another

[Rick Romero]

  Quoting Robert Schetterer <rs at sys4.de>:

> Am 04.09.2018 um 17:18 schrieb Sami Ketola:
>>> On 4 Sep 2018, at 18.00, Robert Schetterer <rs at sys4.de> wrote:
>>>
>>> Am 04.09.2018 um 16:52 schrieb Sami Ketola:
>>>>> On 4 Sep 2018, at 17.47, Robert Schetterer <rs at sys4.de> wrote:
>>>>>
>>>>> Am 04.09.2018 um 09:41 schrieb Sami Ketola:
>>>>>> imapsync always loses data
>>>>>
>>>>> never saw this, be carefull by anounce such myths
>>>>
>>>> It is a fact. Imapsync works over IMAP only and IMAP protocol  
>>>> does not even support transferring all data. At most at least UID  
>>>> numbering will be lost and end users need to invalidate their  
>>>> local caches.
>>>
>>> but using "looses data" might others think it also may fail with imap,
>>> so be more detailed next time
>>
>> UID number is also data that is saved on the IMAP backend. If that  
>> is lost then it's "lost data".
>>
>> Sami
>
> Sorry i migrated terrabytes of mail with imapsync and never had a
> problem, it works as designed, also with maildir rsync did a good job,
> what never worked as it should was dsync ,cause of bugs ,that may
> changed now
>
> so this is my answer to topic
>
> "Best way to move mail from one server to another"
>  

https://imapsync.lamiral.info/FAQ.d/FAQ.Duplicates.txt

Seems to use UIDs so that 'data' isn't lost.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://dovecot.org/pipermail/dovecot/attachments/20180904/46e3faf9/attachment.html>