Cannot send mail to shared folder

[Jakob Boos]

Hi,

even after searching the mailing lists and reading the corrsponding entries
there and in the wiki, I cannot send mails directly to a shared folder on a
Kolab v2.0.3 server.

That's what the postfix log says:
Recipient address rejected: User unknown in local recipient table

In cyradm the shared folder is listed (shared.test at mydomain.com). I granted
post access to anyone through the Kolab admin interface. I tried
kolab+shared.test at mydomain.com as well as shared.test at mydomain.com.

For me it seems that this is a postfix problem. How can I convince postfix
to deliver the mail to that folder?

Thanks for help
Jakob