[Dovecot] Prevent re-download mails

[Francisco Wagner C. Freire]

Hello,

The clients re-download the messages on every connection, i current looking
for the client versions with this problem.

On Mon, Dec 12, 2011 at 3:15 PM, Wouter van der Schagt
<wouter at vdschagt.com>wrote:

> > Looking for more info.
>
> Even with the same UIDL values, some e-mail clients will still redownload
> the messages if a hostname changed.
>
> Anyway, annoying as it is, after the second download it will stop, you can
> ask your users to simply delete the duplicates, it won't download a 3rd
> time.
>
> - WS
>
>