On 23.7.2011, at 12.38, Vincent Richomme wrote:

I am working on a webmail project using dovecot as imap server and I would need to make a demo however I don't want to show all my emails addresses. So my question is knowing that I am using the maildir format, would it ne possible to do a kind of search and replace of all emails/cc/to and replace them by fake ones or will it break something like indexes ?

I guess you already tried, but yeah, if you modify emails you'll need to delete dovecot.index.cache files also.