Ok, it seems i found the problem, i was missing the plugin declaration into dovecot.conf

imapc_host = mail.foo.com imapc_features = rfc822.size pop3c_host = mail.foo.com

namespace { separator = / inbox = yes }

protocol doveadm { mail_plugins = $mail_plugins pop3_migration }

disable_plaintext_auth = no pop3_uidl_format = UID%u-%v

And then using command:

*doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o pop3c_password=bar backup -R -u user at domain <http://dovecot.org/cgi-bin/mailman/listinfo/dovecot> pop3c:*

The only doubt i have is how to sync both imap and pop3, i've seen that if i made a pop3c sync ath then impac sync gives an error, and if execute imapc and then pop3c it gives an error too.

2013/9/2 nik600 <nik600@gmail.com>

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@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@domain imapc:

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

Or imapc is enough?

Do you have any suggestion?

Thanks

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

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

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