Accepting incoming emails at two locations with two Exchange servers

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bora - 29 Nov 2005 16:32 GMT

Hi, I have two locations (US and UK) with one exchange for US and one
exchange for UK. The Exchange servers are in the same routing group and

administrative group. Because the domain names for is different then US
than
UK, I want to receive incoming email on both servers depending on the
email
address and domain name, can this be configured? Both Exchange servers
are connected to the same Windows 2003 domain controller?

For example, companyname.com domain email goes to ExchangeUS server and

companyname.com.uk goes to ExchangeUK Server.

Is this setup does not work, what is the suggested configuration?

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Bharat Suneja - 29 Nov 2005 16:59 GMT

Do you mean different SMTP/DNS domains - company.com for US and
Company.co.uk for UK?
- Make sure you have Recipient Policies in place for generating email
addresses with both these domains for the different set of users
- In external/public DNS for company.co.uk insert A record for public/NATted
IP address of your UK Exchange server, and insert an MX record pointing to
that A record.
- In the US domain's external/public DNS do the same for the US server
- Make sure both servers are reachable from outside on SMTP (port 25)

- You can also insert additional MX records in each domain pointing to the
other Exchange Server (in US DNS -> point to UK Exchange server) with a
lower priority (higher numeric value). This will ensure you continue to
accept inbound internet mail if one of the servers is down/unreachable.

Signature

Bharat Suneja
MCSE, MCT
www.zenprise.com
blog: www.suneja.com/blog
-----------------------------------------

> Hi, I have two locations (US and UK) with one exchange for US and one
> exchange for UK. The Exchange servers are in the same routing group and
[quoted text clipped - 11 lines]
>
> Is this setup does not work, what is the suggested configuration?

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bora - 29 Nov 2005 20:48 GMT

Hi, I want to send/receive (SMTP/DNS) for US pointing to ExchangeUS for
company.com domain server and for UK pointing to ExchangeUK server for
company.com.uk? Both Exchange servers are in the same Windows 2003
domain and AD environment.

If I understand correctly, I can point the MX record for company.com to
ExchangeUS server and point MX record for company.com.uk to ExchangeUK.
This will allow Internet Mail delivery and sending? How should the
Recipent Update Service and Routing Group Master be configured?

Reply to this Message

Bharat Suneja - 29 Nov 2005 22:19 GMT

- this is a mail routing issue, Recipient Policy and RUS have nothing to do
with this
- this will allow receiving US mail on US exchange box, UK mail on the UK
exchange box
- the second part of the solution - adding each other as secondary MX with
lower priority (higher numerical value) - will add redundancy in case one
server is down other will receive
- sending mail: depending on how your SMTP Connectors are configured, has
nothing to do with MX records and external DNS

Signature

Bharat Suneja
MCSE, MCT
www.zenprise.com
blog: www.suneja.com/blog
-----------------------------------------

> Hi, I want to send/receive (SMTP/DNS) for US pointing to ExchangeUS for
> company.com domain server and for UK pointing to ExchangeUK server for
[quoted text clipped - 5 lines]
> This will allow Internet Mail delivery and sending? How should the
> Recipent Update Service and Routing Group Master be configured?

Reply to this Message

Bharat Suneja - 29 Nov 2005 22:32 GMT

Signature

Bharat Suneja
MCSE, MCT
www.zenprise.com
blog: www.suneja.com/blog
-----------------------------------------

>- this is a mail routing issue, Recipient Policy and RUS have nothing to do
>with this

****ignore this. From my first reply "Make sure you have Recipient Policies
in place for generating email addresses with both these domains for the
different set of users". I assume you have these in place already.***

> - this will allow receiving US mail on US exchange box, UK mail on the UK
> exchange box
[quoted text clipped - 12 lines]
>> This will allow Internet Mail delivery and sending? How should the
>> Recipent Update Service and Routing Group Master be configured?

Reply to this Message