[Dovecot] dovecot mbox to dovecot maildir migration

Timo Sirainen tss at iki.fi
Thu Aug 17 20:48:38 EEST 2006

On Fri, 2006-08-18 at 00:05 +0800, Michael Blancas wrote:
> Hi,
> I'm migrating accounts from one server with dovecot mbox and pam
> nss-ldap authentication to a new server with dovecot maildir and mysql
> auth (no posix accounts).
> My problem is the pop3 uidl format on the two servers are different,
> even though I'm using pop3_uidl_format = %08Xu%08Xv in both configs,
> I'm always re-downloading left messages on my test runs. Is there a
> way I could reuse the X-UID and X-IMAPbase headers on the converted
> mails. Issuing the UIDL command via pop3 always give a different
> result for the mbox and maildir spools.
> The X-UID and X-IMAPbase headers are present in the converted mails.
> The first number of X-IMAPbase maps to the mail UIDVALIDITY and the
> second is the same as X-UID, the mail uid.

You'll have to make your conversion script create dovecot-uidlist file
based on the X-IMAPbase and X-UID headers. There could be existing
scripts to do that, but I'm not sure.

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