On Wed, 14 Jan 2009 10:50:01 -0600 (CST)
"Matt Rude" <li...@mattrude.com> wrote:

> >
> > /etc/postfix-asciiking/main.cf:
> > transport_maps = hash:/etc/postfix-asciiking/transport
> >
> > /etc/postfix-asciiking/master.cf:
> > blocked      unix  -       -       n       -       -       smtp -o
> > relayhost = [IP-of-other-Postfix-instance]
> >
> > /etc/postfix-asciiking/transport
> > earthlink.com       blocked:
> > mindspring.com      blocked:  
> 
> Put the "IP-of-other-Postfix-instance" after "blocked:"
> 
> See: http://www.postfix.org/transport.5.html
> 
>        When  no  nexthop  host name is specified, the destination
>        domain name is used instead. For  example,  the  following
>        directs  mail  for u...@example.com via the slow transport
>        to a mail exchanger for example.com.  The  slow  transport
>        could be configured to run at most one delivery process at
>        a time:
> 
>             example.com      slow:
> 

Using transport_maps...
# postconf -n -c /etc/postfix-asciiking/
. . .
syslog_name = postfix-ak
transport_maps = hash:/etc/postfix-asciiking/transport
. . .


Since the only thing I want to override is the relayhost for
destination, I can use the default transport with my own gateway...

# cat /etc/postfix-asciiking/transport
earthlink.com           :[72.55.179.43]
mindspring.com          :[72.55.179.43]
. . . 


This is a test result...

# grep DCA4A9480D9 /var/log/maillog
Jan 14 12:15:00 cl-t090-563cl postfix-ak/pickup[5125]: DCA4A9480D9: uid=505 
from=<usak-boun...@asciiking.com>
Jan 14 12:15:00 cl-t090-563cl postfix-ak/cleanup[5099]: DCA4A9480D9: 
message-id=<20090114171500.dca4a948...@asciiking.com>
Jan 14 12:15:00 cl-t090-563cl postfix-ak/qmgr[5100]: DCA4A9480D9: 
from=<usak-boun...@asciiking.com>, size=2724, nrcpt=1 (queue active)
Jan 14 12:15:01 cl-t090-563cl postfix-ak/smtp[5132]: DCA4A9480D9: 
to=<greentree1...@earthlink.net>, relay=mx3.earthlink.net[209.86.93.228]:25, 
delay=0.34, delays=0.03/0.01/0.26/0.05, dsn=5.0.0, status=bounced (host 
mx3.earthlink.net[209.86.93.228] said: 550 550 Dynamic/zombied/spam IPs 
blocked. Write blockedbyearthl...@abuse.earthlink.net (in reply to MAIL FROM 
command))
Jan 14 12:15:01 cl-t090-563cl postfix-ak/bounce[5167]: DCA4A9480D9: sender 
non-delivery notification: 3A03D9480DE
Jan 14 12:15:01 cl-t090-563cl postfix-ak/qmgr[5100]: DCA4A9480D9: removed

I don't mind being more exhaustive if there's any chance that I've
overlooked something, but I've been using Postfix a couple years now
and this is the only part of my configuration that I don't really know
that well.

Thanks,
Chris Babcock

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