[Dovecot] imapc with Outlook.com transfers max 22-23 messages per mailbox!?

[Nicholas Riley]

For future reference, I ended up using OfflineIMAP instead (doesn't give 
me indexing/LDA functionality, but I'll just do that separately).  This 
seems clearly like a server bug as mbsync/isync also had an issue 
finding all the messages in each mailbox.

In article <njriley-12092C.17352005052014 at news.gmane.org>,
 Nicholas Riley <njriley at illinois.edu> wrote:

> Hi,
> 
> I'm trying to migrate a user from Outlook.com IMAP to Dovecot.  I'm 
> using a setup similar to that on 
> http://wiki2.dovecot.org/Migration/Dsync:
> 
> imapc_host = imap-mail.outlook.com
> imapc_user = [...]@hotmail.com
> imapc_password = [...]
> imapc_features = rfc822.size fetch-headers
> mail_prefetch_count = 20
> 
> imapc_port = 993
> imapc_ssl = imaps
> imapc_ssl_verify = yes
> ssl_client_ca_dir = /etc/ssl # this needs fixing on the wiki page 
> 
> Here's how I sync a single mailbox, which should have a few hundred 
> messages in it:
> 
> % doveadm -D -v -c [...] sync -1 -R -u [...] -m Avalon imapc:
> 
> Output is at http://sabi.net/temp/sync.txt
> 
> But every mailbox contains at most 22-23 messages.
> 
> % for i in Maildir/**/cur; do
> echo $i $(ls -1 $i | wc -l)
> done
> Maildir/Alaska/cur 23
> Maildir/Avalon/cur 22
> Maildir/Christine Scott/cur 22
> Maildir/Cornell/cur 22
> Maildir/Coupons/cur 10
> Maildir/Deleted/cur 22
> [...]
> 
> I was using 2.2.9 but I also tried with the dovecot-2.2 hg tip and did 
> not see any difference.
> 
> Is there a rawlog equivalent for imapc?  I'm hoping that there is a 
> simple protocol usage change that could let me get entire mailboxes.
-- 
Nicholas Riley <njriley at illinois.edu>