On Oct 7, 2008, at 6:04 PM, CJ Keist wrote:
Anyone out there know of a tool that can convert a Cyrus MailDir
format to Dovecot mbox? I have a user that I need to move over from a mail server running cyrus using MailDir format. At first I told him to
setup second account with Thunderbird to our mail server and then use Thunderbird to move the messages over. But he has over 100K
messages so not as easy to do. Is there a tool out there for doing this sort of conversion? I
tried to simply cat all the messages into a single file, but just got a "Not valid mbox format" when I tried to read the mail folder.
You could use either cyrus2dovecot or cyrus2courier tools to convert
to Maildir format (http://wiki.dovecot.org/Migration/Cyrus). From
there use some maildir to mbox conversion tool (e.g. Dovecot's convert-
tool).