[Dovecot] Dovecot has no understandable configuration any more

[forum]

Hello,

my last problem could be solved now with

userdb {
   driver = static
   args = uid=mail gid=mail home=/srv/mail/%d/%n
}


I can connect to dovecot locally with an webmailer.
But there is no listener process to be seen outside of the server?

Locally this ports are working, but not outside:

# netstat -tulpn | grep dove
tcp6       0      0 :::110                  :::*                    
LISTEN      5741/dovecot
tcp6       0      0 :::143                  :::*                    
LISTEN      5741/dovecot
tcp6       0      0 :::993                  :::*                    
LISTEN      5741/dovecot
tcp6       0      0 :::995                  :::*                    
LISTEN      5741/dovecot

Is this a configuration problem inside dovecot?


Another problem is the migration from the existant emails from V1 to 
V2:
In the log i can find:

Apr 30 11:14:57 imap(xxxx at yyyy): Error: Broken file 
/srv/mail/yyyy/xxxx/.INBOX.dir.09/dovecot-uidlist line 1: Broken header 
(uidvalidity = 0, next_uid=697)

How can i recover this?
Delete all the index files?

Has someone an idea how to migrate the emails from charset ISO8859-1 to 
UTF-8?


Best regards
Karsten