[Dovecot] Cyrus MailDir to Dovecot mbox

[Timo Sirainen]

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).

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