dovecot - Jan 2013 - Migrating mailboxes

Hello everyone and Happy 2013!

I have a situation -- the first ever I have come across -- which I don't
understand.

A friend was/is running Postfix and Dovecot - with default configs -
nothing was ever changed :-)

[root at mail home]# dovecot --version
0.99.11

Anyway, he had a problem with a user mailbox which I wasn't able to
diagnose and fix easily. maillog showed:
Jan  9 16:11:29 mail imap-login: Login: userx [::ffff:127.0.0.1]
Jan  9 16:11:29 mail imap(userx): file lib.c: line 37 (nearest_power):
assertion failed: (num <= ((size_t)1 << (BITS_IN_SIZE_T-1)))
Jan  9 16:11:29 mail dovecot: child 25217 (imap) killed with signal 6
Jan  9 16:12:03 mail imap-login: Login: userx [::ffff:127.0.0.1]
Jan  9 16:12:03 mail imap(userx): file lib.c: line 37 (nearest_power):
assertion failed: (num <= ((size_t)1 << (BITS_IN_SIZE_T-1)))
Jan  9 16:12:03 mail dovecot: child 25229 (imap) killed with signal 6
Jan  9 16:13:15 mail pop3-login: Login: userx [::ffff:192.168.0.55]
Jan  9 16:13:15 mail pop3(userx): file lib.c: line 37 (nearest_power):
assertion failed: (num <= ((size_t)1 << (BITS_IN_SIZE_T-1)))

My aim is not to fix the above.
I have reconfigured both Postfix and Dovecot to use Maildir now and things
are fine (not securitywise, but I don't care about that) for now.
However, I'd like to migrate old mail for some users, but I don't know
how
to go about this, given the mailbox format, which I don't understand:
Here is what a typical one looks like:

[root at mail home]# ls -al johndoe/mail/.imap/
total 24
drwx------  6 johndoe users 4096 May 27  2010 .
drwx------  3 johndoe users 4096 May 27  2010 ..
drwx------  2 johndoe users 4096 May 27  2010 Drafts
drwx------  2 johndoe users 4096 Jan  9 15:46 INBOX
drwx------  2 johndoe users 4096 May 27  2010 Sent
drwx------  2 johndoe users 4096 May 27  2010 Trash
[root at mail home]# ls -al johndoe/mail/.imap/INBOX/
total 180
drwx------  2 johndoe users   4096 Jan  9 15:46 .
drwx------  6 johndoe users   4096 May 27  2010 ..
-rw-------  1 johndoe users      5 Dec 18  2007 .customflags
-rw-------  1 johndoe users  10272 Jan  9 15:46 .imap.index
-rw-------  1 johndoe users 132774 Jan  9 11:27 .imap.index.data
-rw-------  1 johndoe users   5136 Sep 26  2011 .imap.index.log
-rw-------  1 johndoe users   9404 Jan  8 18:44 .imap.index.tree
[root at mail home]# ls -al johndoe/mail/.imap/Sent/
total 36
drwx------  2 johndoe users  4096 May 27  2010 .
drwx------  6 johndoe users  4096 May 27  2010 ..
-rw-------  1 johndoe users     5 May 27  2010 .customflags
-rw-------  1 johndoe users  1608 May 27  2010 .imap.index
-rw-------  1 johndoe users 10264 May 27  2010 .imap.index.data
-rw-------  1 johndoe users  2576 May 27  2010 .imap.index.log
-rw-------  1 johndoe users  1556 May 27  2010 .imap.index.tree
[root at mail home]# ls -al johndoe/mail/.imap/Drafts/
total 36
drwx------  2 johndoe users  4096 May 27  2010 .
drwx------  6 johndoe users  4096 May 27  2010 ..
-rw-------  1 johndoe users     5 May 27  2010 .customflags
-rw-------  1 johndoe users  1608 May 27  2010 .imap.index
-rw-------  1 johndoe users 10264 May 27  2010 .imap.index.data
-rw-------  1 johndoe users  2576 May 27  2010 .imap.index.log
-rw-------  1 johndoe users  1556 May 27  2010 .imap.index.tree
[root at mail home]# ls -al johndoe/mail/.imap/Trash/
total 44
drwx------  2 johndoe users  4096 May 27  2010 .
drwx------  6 johndoe users  4096 May 27  2010 ..
-rw-------  1 johndoe users     5 May 27  2010 .customflags
-rw-------  1 johndoe users  1608 May 27  2010 .imap.index
-rw-------  1 johndoe users 17950 May 27  2010 .imap.index.data
-rw-------  1 johndoe users  2576 May 27  2010 .imap.index.log
-rw-------  1 johndoe users  1556 May 27  2010 .imap.index.tree

How can I migrate these mails into /home/johndoe/Maildir/ ?? They don't
seem like mbox to me so mb2md.pl doesn't seem to apply here..





-- 
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254733744121/+254722743223
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
I can't hear you -- I'm using the scrambler.

On 2013-01-09 9:02 AM, Odhiambo Washington <odhiambo at gmail.com>
wrote:
> [root at mail home]# dovecot --version
> 0.99.11
Ummm... seriously?

Your assignment, should you choose to accept it (or not), is to upgrade 
dovecot (and possibly if you have a similarly ancient/unsupported 
version of it too).

There is simply no, that is ZERO excuse for continuing to use this 
version of dovecot...

Charles is right, There is little point in migrating mailboxes onto the 
server now, do the upgrade before!
See if you can get a recent 1.2 version or if possible 2.1.
More recent versions also have better features to help you with handling 
or converting a foreign mail store, but that is hardly even the central 
point here :-)

As for your old mail system, what software does it use?
Do you have mailboxes with actual mail in them?
Your ls output seems to show only indexes.

Gedalya



On 01/09/2013 09:02 AM, Odhiambo Washington wrote:
> Hello everyone and Happy 2013!
>
> I have a situation -- the first ever I have come across -- which I
don't
> understand.
>
> A friend was/is running Postfix and Dovecot - with default configs -
> nothing was ever changed :-)
>
> [root at mail home]# dovecot --version
> 0.99.11
>
>