[Dovecot] migration to dovecot pop3

[Joseph Tam]

Rajesh M writes:

> i am planning to migrate from qmail pop3 to dovecot pop3
>
> the number of users on the server is large over 5000
> ...
> also data volume is large - over 3.5 tb -- ie many users several 1000s of
> emails in their inbox

If you stay on the list, you might find some people here whose
mail metrics are several orders of magnitude larger than this.

> 1) will the migration cause all the emails on the server to re-download
> ...
> 4) has anybody migrated from qmail pop3 to dovecot pop3 successfully
> without emails being downloaded again

A proper migration will avoid this.  Google is your friend

 	http://lmgtfy.com/q=POP+qmail+to+dovecot+migration

The top hits provide exactly what you're looking for.

> 2) can dovecot be configured to allow only one download at a time - pop3
> locking with time out setting that can be customized
>
> 3) can dovecot pop3 be configured so that it will allow download of emails
> only of the last say 15 days ie even if the same pop3 user is configure on
> another machine it will download only messages of the last 15 days

I can't answer this, but if this is an attempt to prevent mass download,
the answer to 1+4 makes these questions irrelevant.

Joseph Tam <jtam.home at gmail.com>