I commented the line you told. It did'nt changed the result.
> Date: Mon, 30 Jul 2012 06:29:54 +0800
> Subject: 回覆： Re: no route to host
> From: little...@tcssh.tc.edu.tw
> To: postfix-users@postfix.org; mjw...@kapu.net
>
> Just comment the transport field and reload your postfix before you are
> going to re-do the test!
>
> LittleCho@My Xperia
>
> Michael J Wise <mjw...@kapu.net>提到：
>
> >
> >On Jul 29, 2012, at 2:13 PM, Engin qwert wrote:
> >
> >> transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
> >
> >… any from other logs, yer MySQL is pooched in some way.
> >
> >I think I see the problem.
> >I have no idea how to fix it, sorry.
> >
> >Aloha,
> >Michael.
> >--
> >"Please have your Internet License
> > and Usenet Registration handy..."
> >
