dovecot - Sep 2012 - Dovecot 1.x POP3 to Dovecot 2.x POP3 mbox to Maildir best transfer program/method

I have a? box running Dovecot 1.x POP3 only server using mbox format. I want to
port the mail over to a Centos 6.3 box running a Dovecot 2.x POP3 only server
using Maildir format. The main thing I want to do is support
XUID/read/unread status so the transfer is transparent for the end user. I have
been able to achieve transfers from the mbox format to Maildir
but loose the XUID/read/unread status so that the Thunderbird client always
re-downloads all the mail as if it were new. Ive googled and I have tried the
following:

dsync : dovecot 1.x server is too old and doesnt support the command?
mb2md.pl: transfers the mbox to maildir and creates file dovecot-uidlist but the
Thunderbird client redownloads the files
virtualmin copy-mailbox: transfers the mailbox to Maildir but doesnt reproduce
the dovecot indexes.

Any thoughts would be appreciated.
I would like to produce a howto of the process when I am done.

I have further read the Migration documentation and someone pointed out to me
two good questions:

1 - If I use the modified mb2md.pl -U the program creates a dovecot-uidlist. Or
if I can produce this list

is there a way I can make dovecot use this list when it creates the
dovecot-index file sets the first time it accesses the mailbox?
Aka is there a command line option using dovecot or doveadm that creates the
indexes based on the dovecot-uidlist that I can
script for each mailbox I transfer?


2 - How/where/when do I use "pop3_reuse_xuidl=yes" in the dovecot.conf
file for the first time each mailbox is read? Does this option need
to be used after the first time (it is not set by default in my new server
config).



________________________________
 From: Tim E. <silent_wumpus at yahoo.com>
To: Dovecot List Mailing <dovecot at dovecot.org> 
Sent: Friday, September 7, 2012 3:32 PM
Subject: [Dovecot] Dovecot 1.x POP3 to Dovecot 2.x POP3 mbox to Maildir best
transfer program/method
 
I have a? box running Dovecot 1.x POP3 only server using mbox format. I want to
port the mail over to a Centos 6.3 box running a Dovecot 2.x POP3 only server
using Maildir format. The main thing I want to do is support
XUID/read/unread status so the transfer is transparent for the end user. I have
been able to achieve transfers from the mbox format to Maildir
but loose the XUID/read/unread status so that the Thunderbird client always
re-downloads all the mail as if it were new. Ive googled and I have tried the
following:

dsync : dovecot 1.x server is too old and doesnt support the command?
mb2md.pl: transfers the mbox to maildir and creates file dovecot-uidlist but the
Thunderbird client redownloads the files
virtualmin copy-mailbox: transfers the mailbox to Maildir but doesnt reproduce
the dovecot indexes.

Any thoughts would be appreciated.
I would like to produce a howto of the process when I am done.

On 7.9.2012, at 22.32, Tim E. wrote:
> I have a  box running Dovecot 1.x POP3 only server using mbox format. I
want to port the mail over to a Centos 6.3 box running a Dovecot 2.x POP3 only
server using Maildir format. The main thing I want to do is support
> XUID/read/unread status so the transfer is transparent for the end user. I
have been able to achieve transfers from the mbox format to Maildir
> but loose the XUID/read/unread status so that the Thunderbird client always
re-downloads all the mail as if it were new. Ive googled and I have tried the
following:
> 
> dsync : dovecot 1.x server is too old and doesnt support the command?
> mb2md.pl: transfers the mbox to maildir and creates file dovecot-uidlist
but the Thunderbird client redownloads the files
> virtualmin copy-mailbox: transfers the mailbox to Maildir but doesnt
reproduce the dovecot indexes.
> 
> Any thoughts would be appreciated.
> I would like to produce a howto of the process when I am done.
Copy the mboxes to the new v2.x server and use dsync to convert them to maildir.

Sorry for the delay. I have tried and failed to use dsync properly. What would
the format and usage of the command be?
I have all my old Mbox mail file called user onto the new server under
/home/trans and used dsync as follows:

dsync -v -u user backup user at domain.com

All I get back is the usage. Also, another concern. Will the dovecot indexes be
recreated as they where on the old server. I ask
this question since the mbox file does not have the associated dovecot indexes.
I know Im foobaring/newbying something simple at this point.
Any help would be appreciated. The real question is will the clients have to
redownload their emails as I described in the first post.



________________________________
 From: Timo Sirainen <tss at iki.fi>
To: Tim E. <silent_wumpus at yahoo.com> 
Cc: Dovecot List Mailing <dovecot at dovecot.org> 
Sent: Tuesday, September 11, 2012 2:50 PM
Subject: Re: [Dovecot] Dovecot 1.x POP3 to Dovecot 2.x POP3 mbox to Maildir best
transfer program/method
 
On 7.9.2012, at 22.32, Tim E. wrote:
> I have a? box running Dovecot 1.x POP3 only server using mbox format. I
want to port the mail over to a Centos 6.3 box running a Dovecot 2.x POP3 only
server using Maildir format. The main thing I want to do is support
> XUID/read/unread status so the transfer is transparent for the end user. I
have been able to achieve transfers from the mbox format to Maildir
> but loose the XUID/read/unread status so that the Thunderbird client always
re-downloads all the mail as if it were new. Ive googled and I have tried the
following:
> 
> dsync : dovecot 1.x server is too old and doesnt support the command?
> mb2md.pl: transfers the mbox to maildir and creates file dovecot-uidlist
but the Thunderbird client redownloads the files
> virtualmin copy-mailbox: transfers the mailbox to Maildir but doesnt
reproduce the dovecot indexes.
> 
> Any thoughts would be appreciated.
> I would like to produce a howto of the process when I am done.
Copy the mboxes to the new v2.x server and use dsync to convert them to maildir.