dovecot - May 2007 - Converting Courier mailboxes to Dovecot

Hi,

I have around 100 mailboxes (maildirs) to convert from Courier IMAP 
(4.1.3) to Dovecot.

(From a recent backup) I've tested a few mailboxes on Dovecot 1.0.0, and 
while the client doesn't notice any difference (at least in Thunderbird) 
I'm hoping to get rid of the old Courier folders and convert any useful 
information they may have into Dovecot.

I've tried Timo's migration script 
(http://www.dovecot.org/tools/courier-dovecot-migrate.pl) but it fails 
at line 230 with a "no file/directory" error.
At that line, it appears to be finding Courier's keywords folder 
(courierimapkeywords), and looking for a file called ":list".

However in my mailboxes, there's no file by that name, only what looks 
like a set of standard IMAP filenames, most of which are empty files.

If I can't salvage anything useful, is there any adverse effects to me 
deleting all the "courier*" files/folders from each mailbox and 
subfolders so when the client connects back when Dovecot's running, it 
creates it's own UIDs and keywords etc?

Thanks

Andy.

On 5/4/07, Andy Shellam <andy.shellam-lists at mailnetwork.co.uk> wrote:
>
> If I can't salvage anything useful, is there any adverse effects to me
> deleting all the "courier*" files/folders from each mailbox and
> subfolders so when the client connects back when Dovecot's running, it
> creates it's own UIDs and keywords etc?
>
I rsync'ed from one mailserver to another and excluded the courier
related files. Then I crawled each user's imap folders on both systems
with a perlscript and wrote out the results to two files.

As you suggest various logs/indexes were created by dovecot and all my
accounts were the same. Baring a few deliveries. You will loose folder
subscription information remember and I know nothing about shared
folder stuff.

Btw, the difference between courier and dovecot is insane the dovecot
machine I am using is not a 3rd of the courier machine and the speed
is quite impressive. I hope to see an additional advantage to using
dovcot's lda deliver to prep these indexes as well.

-- 
Gabriel Millerd