Hi Walu,

You will need to edit the main.cf and add the domain xxx.xx.ke to the
relay_domains and smtp restrictions.

for example

relay_domains = $mydestination xxx.xx.ke

add the relay domains check in the smtp recipient restrictions.

smtpd_recipient_restrictions = permit_mynetworks check_relay_domains

Then you will need to define the transport

transport_maps = hash:/path/to/transport/file

inside transport file

xxx.xx.ke smtp:hostname/IP

Then once completed. Create the transport database from the prompt
(while inside the transport file directory)

postmap transport

HTH - also please see
http://www.postfix.org/STANDARD_CONFIGURATION_README.html#backup

I have never had to do this type of config before but ideally the url
above should clear some of the challenges.

Regards,

Michuki.

On 12/16/10 9:03 AM, Walubengo J wrote:
> Quick one,
>
> I have postfix (on ubuntu) as the main smtp facing the internet. Its
> already configured and is receiving nd sending mail on behalf of the
> domain xxx.xx.ke
>
> Now, I have another internal mail server (on the inside 192.x.x.x.) that
> routes internal mails and forwards external mails to the postfix server
> for outbound delivery.
>
> Problem: How to configure Postfix to forward inbound
> external(internet-based) mails to the internal mail server. Do I tweak
> the "transport.db" or the "virtual.db" files to get his working and how?
>
> walu.
>
>
>
>
>
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