dovecot - Sep 2013 - migration from IMAP/POP3 courier server to a remote dovecot server

Dear all

i'm planning a transparent migration from a courier server that provides
both IMAP and POP3 access to users to a remote dovecot server with both
IMAP and POP3 access.

I have to migrate about 2500 users for 250 GB of space.

I'm using dovecot 2.2.5.4 on debian6 squeeze.

To make a transparent migration i have to maintain old IMAP UIDs and POP3
UIDs, so i've read

http://wiki2.dovecot.org/Migration
and
http://wiki2.dovecot.org/Migration/Courier
and
http://wiki2.dovecot.org/Migration/Dsync

And decided that probably the best tool to use is Dsync, as the
courier-dovecot-migrate.pl<http://www.dovecot.org/tools/courier-dovecot-migrate.pl>
script
works only locally.

I've tested the dsync following instructions reported above but after the
migration of one test-account the client re-download messages.


If i want to keep both  IMAP UIDs and POP3 UIDs i have to sync both imapc
and pop3c with two commands?

doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o
pop3c_password=bar backup -R -u user at domain imapc:

doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o
pop3c_password=bar backup -R -u user at domain pop3c:

Or imapc is enough?

Do you have any suggestion?

Thanks

-- 
/*************/
nik600
http://www.kumbe.it

to give some more information, i've set

pop3_uidl_format = UID%u-%v

on the courier-side i get this UIDL answer:

UIDL
+OK
1 1378040847.Vfe11I12801312M172099.myserver.cloud923
2 UID2-1378040947
3 UID3-1378040947
4 UID4-1378040947
5 UID5-1378040947


on the dovecot-side i get this UIDL answer:
UIDL
+OK
1 UID1-1378127599
2 UID2-1378127599
3 UID3-1378127599
4 UID4-1378127599
5 UID5-1378127599





2013/9/2 nik600 <nik600 at gmail.com>
> Dear all
>
> i'm planning a transparent migration from a courier server that
provides
> both IMAP and POP3 access to users to a remote dovecot server with both
> IMAP and POP3 access.
>
> I have to migrate about 2500 users for 250 GB of space.
>
> I'm using dovecot 2.2.5.4 on debian6 squeeze.
>
> To make a transparent migration i have to maintain old IMAP UIDs and POP3
> UIDs, so i've read
>
> http://wiki2.dovecot.org/Migration
> and
> http://wiki2.dovecot.org/Migration/Courier
> and
> http://wiki2.dovecot.org/Migration/Dsync
>
> And decided that probably the best tool to use is Dsync, as the
>
courier-dovecot-migrate.pl<http://www.dovecot.org/tools/courier-dovecot-migrate.pl>
script
> works only locally.
>
> I've tested the dsync following instructions reported above but after
the
> migration of one test-account the client re-download messages.
>
>
> If i want to keep both  IMAP UIDs and POP3 UIDs i have to sync both imapc
> and pop3c with two commands?
>
> doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o
pop3c_password=bar backup -R -u user at domain imapc:
>
> doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o
pop3c_password=bar backup -R -u user at domain pop3c:
>
> Or imapc is enough?
>
> Do you have any suggestion?
>
> Thanks
>
> --
> /*************/
> nik600
> http://www.kumbe.it
>


-- 
/*************/
nik600
http://www.kumbe.it