[Dovecot] Is there a "connect acl" ?

Hi, I have been reading the acl documentation and it seems that a "connect acl" is not available.

I need to limit the users that can login in an IP number, is that posible with dovecot 1.0? (i.e. only these users can login from the Internet) Or a new plugin should be written? It is complicated to do that?

Thanks Oliver

-- Oliver Schulze L. | http://tinymailto.com/oliver
Asuncion - Paraguay | http://www.solojuegos.mobi