[Dovecot] Problem with Courier POP3 Migration to dovecot POP3

[Timo Sirainen]

On Thu, 2009-06-11 at 19:43 +0100, Ashraf wrote:
> Hi Timo/all
>    Help me please, i am in the process of migrating courier to dovecot
> 1.1.14. I want to do migration as users loging so i am using this
> script http://www.dovecot.org/tools/courier-dovecot-migrate.pl ,
> When i do use post-logging script to migrate POP3, its downloading
> messages again (Duplicating messages) , as some of our users prefer to
> leave messages on server. If i run the script manually on particular
> users home directory and try to download it still duplicating
> messages, as its creating whole new set of dovecot files.

Look at the POP3 UIDL output from Courier and then look at the UIDL
output from Dovecot. How are they different?

I don't remember exactly how that script works, but you may also need to
set pop3_uidl_format as specified in
http://wiki.dovecot.org/Migration/Courier

> login_processes_count = 10
> login_max_processes_count = 128
> login_max_connections = 256

Not really related, but login_processes_count should be about the number
of CPUs/cores you have in the system. Rather increase
login_max_connections.
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