[Dovecot] Prevent re-download mails

[Timo Sirainen]

On 12.12.2011, at 18.34, Selcuk Yazar wrote:

> today we have a problem our mail server about user accounts. (something
> about prefetch) anyway i corrected, but some clients re-download emails
> again.
> how can i stop this .I've read about some forums about UIDVALIDITY  ?

This isn't enough information to give a useful answer.

> is it posibble prevent clients redownload emails with pop3 ?

http://wiki2.dovecot.org/Migration#POP3_migration basically explains the redownloading..