Postfix behavior for internal emails

Hi guys.
I've realized a configuration of postfix that will put in the queue all the emails to send (deferred queue) and, when I want, the email to send will be relayed to the main mailserver.

Now I've 2 questions:
1) How to queue the emails directly in Hold?
I've setup main.cf with this lines:

Code:

transport_maps = hold:[mail.domain.com]
defer_transports = hold
default_transport = hold
virtual_transport = hold

and master.cf:

Code:

hold      unix  -       -       n       -       -       smtp

2) How to setup postfix to not queue and relay the internal emails?
All the internal emails will have the same domain (domain.com).

Thanks a lot
Michele

 

I guess that for the question n.2, I've to find the way to say to postfix that all the emails where the receiver is @domain.com must me delivered locally (with maildir).

Any idea?
Thanks

 

Ok I've solved the question 2:
In mail_transport database I'll setup:

Code:

domain.com  :
*  hold:[mail.relay.com]

Now the local email are now queued and are delivered locally...

I still have the question number 1...

Suggestions?


Thanks
Michele