postfix defer_transport

[Joe Stuart]

Ok so I have Maiscanner running with Postfix on a suse linux server that
scans all the messages then forwards them off to a groupwise server. I
set up Postfix and Mailscanner just like the Mailscanner insallation
guide - Postfix says. But everytime I would send mail to it the maillog
would say

postfix/qmgr[15673]: EEBBA5A400A: to=<me at mydomain.com>, relay=none,
delay=1, status=deferred (deferred transport)

So I changed the line in /etc/postfix.in/main.cf from this

defer_transports = smtp local virtual relay

to

defer_transports =

and it now works, but I'm not comfortable with it not working like the
website says. I am wondering if anyone could help me figure out why it's
not working like it is supposed to.

Thanks,
Joe