Hi
I have read this
RestrictPostfixRecipients - Zimbra :: Wiki
But I am new using zimbra, I want to know if it works in Zimbra 6.0.6 GA
Or if someone knows how to apply something like this, It will be helpfull to me
Thanks a lot!
I am new here ...

Ubutnu 8.04 64bits
Zimbra 6.0.6 GA 64 bits Open Source Version.
Only 1 Domain is running on my server.