virtual domains

Hi,

I have some problems with virtual domains

I have this in main.cf

virtual_alias_domains = newworld.com allo-film.com
virtual_alias_maps= hash:/etc/postfix/virtual


Here is the content of my /etc/postfix/virtual

allo-film.com anything
webmaster@allo-film.com allofilm
newworld.com anything
webmaster@newworld.com newworld



The problem is messages get back to sender with:


SMTP error from remote mailer after RCPT TO:<webmaster@allo-film.com>:
host mx1.allo-film.com [195.140.142.217]:
550 <webmaster@allo-film.com>: Recipient address rejected:
User unknown in virtual alias table



I dont understand... I declared it as it should be...
Some help?