On Sun, 2007-03-04 at 21:08 +0530, John s wrote:> Hi,
>
> I have a Mailserver setup with Qmail+Vpopmail+courier-imap with 2000
> users.The authentication in vpopmail was in plaint text file
> based.Right now the issue
> is while opening a user email box with 50-100 mails it is opening
> fastly.But for email-boxes with attachments and increased number of
> mails it take long time
> to open the Imap connection.
> So I would like to change the Imaps to Dovecot.Please suggest if I can
> migrate from courier-imap to dovecot with vpopmail and qmail without
> changing the present username and passwords.
Dovecot supports vpopmail, so it shouldn't be a problem. Just use passdb
vpopmail and userdb vpopmail.
For migration issues from Courier, see http://wiki.dovecot.org/Migration
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