qpopper -> dovecot migration : which pop3_uidl_format?

Hello,
I have read in lots of places about how I should use
pop3_reuse_xuidl = yes
to prevent pop3 users having to re-download mail (and
duplicate their
e-mail) after a migration.

This fails with the message:
 pop3_uidl_format setting is missing from config file

Which setting for pop3_uidl_format should I set to prevent
the e-mail being
downloaded again?

On 23.7.2007, at 16.47, bob passendon wrote:

> I have read in lots of places about how I should use
> pop3_reuse_xuidl = yes
> to prevent pop3 users having to re-download mail (and
duplicate their
> e-mail) after a migration.
>
> This fails with the message:
> pop3_uidl_format setting is missing from config file
>
> Which setting for pop3_uidl_format should I set to
prevent the e- 
> mail being
> downloaded again?

If all your existing mails have X-UIDL: header then those
are used  
for existing mails, and pop3_uidl_format is used for new
mails. So it  
doesn't matter what you use there.