implementing always_bcc in postfix

Hi,

is there any chance to implement a individual always_bcc rule, wich should not be overwritten due updates? I thought there would be an example listener-file, but I couldn't find one.

(replies in English or German, I can understand both)

Thanks

I've already found that. Bu I'm searching for an option to use bcc with all incoming and outgoing addresses like "always_bcc". If I understand this right, maps are for specific addresses.