dovecot - Apr 2007 - sendmail + dovecot + vpopmail + virtual users, problem with pop3 uidl

Hi,
I just migrated a server running qmail+vpopmail+maildir to 
sendmail+dovecot+maildir+vpopmail
The migrating is working great thanks to the help from the list and the 
wiki.

I'm now running the infamous problem about duplicating emails, because
of pop3 UIDL mismatch.

My question is: anyone knows that the pop3_uidl_format string for
a vpopmail server?

I'm using vpopmail auth and userdb.

I noted that when manually issuing a list command to the vpopmail
pop3 server, it uses a number that is in the filename for identifying 
the email.

For example if the filename uses: .....,S=1234,...
Then the UID is 1234, and 1234 appears in the list command.

Many thanks
Oliver

-- 
Oliver Schulze L.   | Get my e-mail after a captcha in:
Asuncion - Paraguay | http://tinymailto.com/oliver

Doing a little more tests ...

I have this files in the Maildir/cur directory:
$ ls
1161628895.23498.mailserver,S=1311:2,S
1161652404.9410.mailserver,S=147802:2,S
1161652599.9710.mailserver,S=4281:2,S

Doing a list command in pop3, I got:
$ telnet localhost pop3
user me at example.com
pass 123
list
1 1311
2 147802
3 4281

I get the same list using an ls shell command and a pop3 list command,
so I think I should use the option:
pop3_uidl_format = %f
do some tests and compare the results

Thanks
Oliver

-- 
Oliver Schulze L.   | Get my e-mail after a captcha in:
Asuncion - Paraguay | http://tinymailto.com/oliver