OT - Postfix transport maps question

[Julian Field]

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Can you setup your own (internal to your site) dns MX records for
mydomain? Then postfix will deliver to whichever is up and running.

Pete Russell wrote:

> Hi We have postfic and mailscanner combos here - i tried this question
> on the postfix list, but not a lot of useful replies, other than to use
> DNS - i dont have, aside from the nscd running locally.
>
> Some of the domains we relay for are Exchange machines on our private
> network. They have multiple possible destinations for inbound mail - and
> lately i notice the Exchange guys changes which one is avilable, so we
> go from 10.2.2.32 listeing for all inbound smtp traffic to mydomain to
> 10.2.2.33.
>
> Currently outbound mail from my mailscanner machines use the postfix
> transport map.
>
> How do i achieve the following, as it doesnt currentlty work in
> transport maps, when i do a postmap is give errors about duplicate
> entries. According to wietse its not possible using tranport but is
> using fallback_relay = BUT this means i can only have one entry or a
> fallback for one domain. Any one got any other ideas to approach this,
> so i dont have to rename and postmap the transport map every 2nd day ?
>
> eg
> mydomain    smtp:[10.2.2.32]
> mydomain    smtp:[10.2.2.33]
> sub.mydomain    smtp:[10.2.2.32]
> sub.mydomain    smtp:[10.2.2.33]
>
> kind regards and thanks in advance
> Pete
>
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Julian Field
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