Converting mailboxes from mbox to maildir.

[Coleman Kane]

On Fri, 2008-05-02 at 13:53 -0400, Scott Garman wrote:
> Since the subject of IMAP servers has come up, I thought I'd ask about 
> something I really need to get around to soon. I have issues with mbox 
> corruption about 1-2 times per year, and still haven't made the switch 
> to Maildir. I'd like to do it before I get an urgent crisis again. :)
> 
> I'm using dovecot as my IMAP/POP server. Does anyone know if it's 
> possible for it to work with both mbox and Maildir at the same time so I 
> can convert my users' mailboxes one user account at a time? From my 
> research so far I'm under the impression that I can configure doevcot to 
> use either mbox or Maildir for all user accounts, but not both.
> 
> War stories and other advice on migrating from mbox to Maildir are welcome.
> 
> Thanks,
> 
> Scott

You can install procmail and use the formail and procmail programs to
perform the conversion.

I believe you want to set up a procmail rule to deliver mail into a
maildir (specify the destination with a trailing slash). Then you use
something like this:

formail -s procmail < mboxfile

I recommend reading up on the procmail/formail manpage before doing this
to ensure that memory serves me right.

-- 
Coleman Kane
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