Routing ALL E-mail via external Host

To complete a Exchange Migration I've been asked to setup Exchange so it forwards ALL e-mail (including internal e-mails) via a external Smart Host, is this possible ?

Exchange 2010 - Send Connector routes all external e-mail via Smart Host no problem but internal e-mail appears not to be affected by Send Connector setting. Even if I disable all Send Connectors internal e-mails still flow.

Does anyone have any ideas how to achieve this ?
Evotec-ITAsked:
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Adam FarageEnterprise ArchCommented:
To complete a Exchange Migration I've been asked to setup Exchange so it forwards ALL e-mail (including internal e-mails) via a external Smart Host, is this possible ?

Nope, at least not for internal emails or emails going across two active directory sites.

You have the external emails setup properly, but due to the way the store driver pickups and delivers messages it is contained within the actual HUB transport portion of the MS Exchange application and is not sent externally unless an external client is on there (at that point it is still delivered internally, and bifurcates into a new message and submits it outbound).
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VB ITSSpecialist ConsultantCommented:
You can't force internal emails to route through a smart host unfortunately as this is by design. Have a read here for more information as to how Exchange routes internal emails: http://technet.microsoft.com/en-us/library/bb232193.aspx

May I ask why you want to route all emails (internal and external) through a smart host? If it's for email archiving purposes, the provider should be able to provide you with an email address that you can configure Exchange to journal to.
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Evotec-ITAuthor Commented:
Thanks Andy and VB, that is what I thought but was being told otherwise I appreciate the quick responses.
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