Mark Zealey said the following on 11/25/08 11:31 AM:

As a quick hack, surely you could deliver a dummy file to the inbox and then login over pop/imap and remove it?

Mark Sure. This is for 85k users with about 50 folders each..

Timo Sirainen said the following on 11/25/08 12:01 PM:

On Nov 25, 2008, at 6:28 PM, Jonathan Siegle wrote:

...

Is there a program written that can be used to build the index files
for a given mbox file without using IMAP/POP? If not I'll be happy
to donate it when I'm done. The args would be the userid , the full
path to the mbox and where to put the index files.

There's a difference between IMAP and POP3: With POP3 you really want
to have message sizes cached. With IMAP you might not want to cache
any fields, but depending on the client you might want to cache many
different fields. That's not really easy to figure out beforehand
(unless you just cache pretty much everything).

Anyway assuming you want POP3 to be fast for most people, this'll do it:

export MAIL=mbox:/tmp:INBOX=/path/to/mbox/file echo "quit" | /usr/local/libexec/dovecot/pop3

I'm actually doing this step for our Webmail application. It has its own set of toc files and also has native access to the filesystems. I want to migrate to the toc files in dovecot instead. I still don't think it would be a bad idea to create a mailutil type application for dovecot.

Thanks, Jonathan