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Exchange routing

Posted on 2011-02-28
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Last Modified: 2012-06-27
Hi all

Any assistance with this will be greatly received.  An organisation which I work for hosts customer A’s mail and Customer B’s mail, another organisation has acquired customer A and B from us but don’t want to take control of their IT services however the organisation does want one (SMTP) address space to be used for both customers including themselves. This is made even more complicated by the fact that the organisation which has acquired customers A and B already has some interesting mail relay settings configured.  I’ll try to explain below.
MX record – abc.net delivers to an Iron Port C360 on which there’s a rule for abc.net to deliver to an IP address in our case a Network load Balanced cluster MSE 2003 which is member of a routing group which has a SMTP connector for abc.net for the other ½ of the organisation (with its own MSE organisation on 2007) this is a crude method but it does work. Adding a third exchange organisation to this will mean another hop in the mail routing and therefore no good. We have a tight deadline but a MSE 2010 deployment is coming in the summer time but unfortunately this cannot wait that long.
So can IronPort be configured to send one address space to three exchange organisations? Via its LDAP queries? If so how?!?
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Question by:samymac
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by:pmorton23
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do you mean send a copy of the email to all three email systems, or just to the correct one. we also have two ironport C360's.
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by:samymac
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Thanks for the response. No I wanted to know whether the LDAP query could see if the SMTP proxy object existed at any of the three exchange organisations and deliver to the one where the object existed on?
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samymac earned 0 total points
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Just to update we our building a federated resource domain for this purpose as the solution I was after is not possible with the infrastructure available.
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