dovecot - Dec 2012 - More detail re dovecot-uidlist and -uidvalidity files

Regarding the dovecot-uidlist header (first line) - I've tried to search
for and figure out what exactly is meant by the "mailbox global uid"
and
once I do, how to manually generate the 128 bit hex variation of it? Could
someone elaborate on this, please.

How would omitting the global uid field, beginning with G, affect remote
clients' syncing of mail? Is this field mandatory? Would "3
V$uid_validity
N$next_uid" be sufficient to ensure that clients don't re-download
everything?

I also see that Dovecot's dovecot-uidvalidity is of the form 4df8a4e2,
whereas the IMAP syncing utility which I'm using (isync) uses an integer.
I'd appreciate it if someone could elaborate on what Dovecot uses and
whether I need to convert one to the other (ie. after syncing with isync,
do I need to convert it to work with Dovecot?

Thanks.

At 10AM +0200 on 13/12/12 you (Dale Gallagher) wrote:
> Regarding the dovecot-uidlist header (first line) - I've tried to
search
> for and figure out what exactly is meant by the "mailbox global
uid" and
> once I do, how to manually generate the 128 bit hex variation of it? Could
> someone elaborate on this, please.
> 
> How would omitting the global uid field, beginning with G, affect remote
> clients' syncing of mail? Is this field mandatory? Would "3
V$uid_validity
> N$next_uid" be sufficient to ensure that clients don't re-download
> everything?
> 
> I also see that Dovecot's dovecot-uidvalidity is of the form 4df8a4e2,
> whereas the IMAP syncing utility which I'm using (isync) uses an
integer.
> I'd appreciate it if someone could elaborate on what Dovecot uses and
> whether I need to convert one to the other (ie. after syncing with isync,
> do I need to convert it to work with Dovecot?
Have you tried using dsync instead of isync to copy the mailboxes
across?

    dsync -o mail_location=imapc: -o imapc_host=old.imap.server \
        -o imapc_user=USER -o imapc_password=PASSWORD \
        backup maildir:/home/user/Maildir

The last parameter is the destination for the copy, in mail_location
format. This will (should) preserve all IMAP-visible information in the
Dovecot index files. See also http://wiki2.dovecot.org/Migration/Dsync .

Ben