2nd instance of Postfix

[motty.cruz]

Hello, 
Sometimes I want to sent out email from 2nd instance of Postfix bypassing
scanner, can someone tell me the command to sent email using 2nd instance of
Postfix? 
I used a while ago and can't remember full command and I'm not very familiar
with Postfix

# postfix -c /etc/postfix2  -t < message          <<-- I can't remember the
command.

Thanks, 
Motty