[Dovecot] Dovecot 2.0.13 How to use POP3 order

[Nick Celebic]

I saw a few commits for 2.0.13 that added MAIL_FETCH_POP3_ORDER, but I 
haven't been able to find any information on how to use it.


I'm migrating from a Merak mail server into dovecot and all the email 
can be copied directly into a Maildir/cur directory.  The filenames are 
just the timestamps.  When I check with dovecot pop3, they seem to be 
randomly ordered.  I'm hoping this provides a solution where it will 
look at the file list or stat order.


If this isn't possible, can someone tell me how I can change the order 
in which dovecot lists mails in a UIDL in POP3?


Thanks,

Nick Celebic

Re: [Dovecot] Dovecot 2.0.13 How to use POP3 order

[Timo Sirainen]

On Thu, 2011-08-25 at 15:11 -0400, Nick Celebic wrote:
 I saw a few commits for 2.0.13 that added MAIL_FETCH_POP3_ORDER, but I 
 haven't been able to find any information on how to use it.

You'll need to add Onumber fields to dovecot-uidlist where the
numbers are sorted in the order you want the mails to show up. For
example:

1 O2 Pfoo :mailfile1
2 O1 Pbar :mailfile2

Now message with IMAP UID 2 is shown first in POP3 UIDL (with POP3 UIDL
bar) and the message with IMAP UID 1 is shown second in POP3 UIDL
(with POP3 UIDL foo).

But if you're only migrating from another POP3 server, this doesn't
matter. It was added only to fix the situation when IMAP UID order
doesn't match POP3 UIDL order and the user has been using both IMAP and
POP3.

So if you simply want POP3 UIDLs to be in wanted order, just put them in
the right order to dovecot-uidlist:

1 Pbar :mailfile2
2 Pfoo :mailfile1

http://no1.wiki2.dovecot.org/MailboxFormat/Maildir explains
dovecot-uidlist more, and you can also look at
http://www.dovecot.org/tools/courier-dovecot-migrate.pl as an example.