OT - Postfix transport maps question

Julian Field MailScanner at ecs.soton.ac.uk
Wed Feb 23 12:23:11 GMT 2005


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Yes, I have the same problem here and the only available solution (we
don't want to split internal/external DNS) is to simple use the
FallbackMX in sendmail.

Pete Russell wrote:

> Yeah we can, i was trying to avoid it, but i guess it will be the only
> option :(
>
>
> Julian Field wrote:
>
>> 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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>>
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>> Julian Field
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>
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