Using same SMTP domain on 2 independent servers

[Martin]

There is an Exchange Server in Australia and an Exchange Server in Japan.
Both were installed independently of each other. Both now want to use the
same SMTP name as in the example below:
UsersInA...@domainname.com
UsersI...@domainname.com

How is it possible for this to work?

Thanks,
Martin

[Steve Schiemann[MSFT]]

This should help:

321721 XCON: Sharing SMTP Address Spaces in Exchange 2000 Server and
Exchange
http://support.microsoft.com/?id=321721

--

Steve Schiemann
Microsoft Exchange Support

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"Martin" <mart...@systemsgo.co.jp> wrote in message
news:ek3SszLS...@tk2msftngp13.phx.gbl...

[Martin]

That's very interesting.
So one of these servers would be the incoming gateway and unresolved
recipients would use an SMTP connector to flow to the second server.

Going off on a tangent, does that mean that I could even have an MX record
for each of the 2 servers with the same metric value (perhaps for some
limited mail flow redundancy purpose). Then unresolved recipients could
forward to the other server? Or perhaps this is not such a good idea as it
could end up in looping?

Thanks a lot for the link.

Best regards,
Martin

"Steve Schiemann[MSFT]" <ssc...@online.microsoft.com> wrote in message
news:uqVKn$OSEHA...@TK2MSFTNGP09.phx.gbl...

[Martin]

That's very interesting.
So one of these servers would be the incoming gateway and unresolved
recipients would use an SMTP connector to flow to the second server.

Going off on a tangent, does that mean that I could even have an MX record
for each of the 2 servers with the same metric value (perhaps for some
limited mail flow redundancy purpose). Then unresolved recipients could
forward to the other server? Or perhaps this is not such a good idea as it
could end up in looping?

Thanks a lot for the link.

Best regards,
Martin

"Steve Schiemann[MSFT]" <ssc...@online.microsoft.com> wrote in message
news:uqVKn$OSEHA...@TK2MSFTNGP09.phx.gbl...

[Martin]

From the article that you mention:

"321721 XCON: Sharing SMTP Address Spaces in Exchange 2000 Server and Exchange"

http://support.microsoft.com/?id=321721,

 

I like Method 2 called "Sharing All Address Spaces". This is where Exchange is authoritative for the address space and unresolved recipients use the "Forward all messages with unresolved recipients to host" option of the SMTP virtual server to get to the other mail server.

 

What I dont understand is Step 5 of the instructions which I have cut and pasted below. 

What would be the "virtual server that is acting as an inbound gateway for the other system"?

And if "Microsoft recommends that no mailboxes reside on this server" then does that mean that I cant use this method at all for my purposes unless I introduce another Exchange server or mail forwarder?

 

Thank you,

Martin

 

"Method 2: Sharing All Address Spaces

This configuration is much simpler, but much less flexible. In this configuration, Exchange is authoritative for all address spaces. You cannot have any contacts in your directory that have a target address that matches a domain that Exchange is authoritative for. To apply this method:

1. Open the properties on the default SMTP virtual server.
2. Click the Messages tab.
3. In the Forward all messages with unresolved recipients to host box, type the FQDN or the IP address, in square brackets ([]), of the server that will receive unresolved mail.
4. Click OK.
5. Repeat this procedure for the default SMTP virtual server on all Exchange servers except for any virtual server that is acting as an inbound gateway for the other system. Microsoft recommends that no mailboxes reside on this server."

[Martin]

Steve,

 

That article you pointed me to is not very clear - at least to me.

In fact I dont think I should be looking at this article at all because it states the following:

 

"If Exchange is the last system in the chain, do not use the following procedures to configure Exchange. The final receiving system must return an NDR for any unresolved addresses. By default, Exchange returns an NDR for any unresolved addresses. If Exchange is the last system in the chain, it is better to create contacts in the Active Directory directory service for all foreign system recipients. Make sure that their target SMTP address is similar to the following format:

@SMTPAddressSpace.domain.com

where SMTPAddressSpace provides additional address information to distinguish the address space from the typical "@domain.com" namespace..."

 

Instead I think I should be looking at this article:

XADM: How to Set Up Centralized SMTP Domain Sharing in Exchange 2000 Server for Independent Organizations

http://support.microsoft.com/default.aspx?scid=kb;en-us;315511

 

Thanks,

Martin