[Dovecot] File and group permissions for incoming mails

[Sascha Scandella]

Hello

I am using Dovecot 1.1.1 together with Postfix (and for some users 
Procmail for
Spam Filtering). Until now I didn't have to use shared mailboxes.

Now I want to use simple simlinking to grant other users of the same 
group access
to my mails. The problem is that new incoming mails have always file 
permissions
set to 0600.

I have also a file called dovecot-shared (0660) in the Maildir folder. 
No success. Why
doesn't this work?

I also tried to use UMASK in the procmailrc. No success.

Any help is appreciated!

Best regards
Sascha