[Dovecot] Migration from Courier to Dovecot: is it recommended to "force" d.index* creation?

[Timo Sirainen]

On ti, 2010-06-08 at 14:07 +0200, Sandro Tosi wrote:
> But we are also wondering it it might be wise to "force" the creation of 
> dovecot.index{,.cache} files at conversion-time. It seems that, at 
> least, d.i.c is created at FETCH of a mail, i.e. reading it, but we do 
> not want to "alter" mails status of our clients.
> 
> Is there a way to create them in batch, or is it better to just let them 
> be created once clients start accessing their mailboxes via dovecot?

Problem is, the contents of cache files depends on what client is being
used. You could of course try to fetch the most commonly used fields
that clients use. Anyway, it's probably not a big deal. The worst that
can happen without index files is slightly higher load temporarily than
what it would have been under Courier.

With v2.0 you could do this pretty easily with doveadm command, but with
v1.x there's no super easy way to do it.