RE: email routing issue- Help!

From: Wesley Kendall [MSFT] (a-wesk_at_online.microsoft.com)
Date: 03/02/04 

Date: Tue, 02 Mar 2004 22:01:33 GMT

>Recently installed a new SBS 2003 server and created the internal
>Company.local domain. External Company.com domain is being hosted by ISP. I
>have now transitioned some of the users to the SBS Exchange server using
>Outlook & MAPI and then set up POP3 connector to get their mail from the
>ISP. Previous to this all users were getting mail via POP3 ISP account.
>
>The other half of the company is still using the ISP POP3 until I can
>transition them over. I have created domain accounts (and email accounts by
>default) for all users so they can log on to the domain for shared folders,
>printers, etc.
>
>Issue:
>The group that is on the Exchange server can route email internally but
when
>they send to a user who is still on the POP3 ISP account
>(someone@company.com) they receive an NDR. Email to all other domains
routes
>correctly. I checked the Exchange email addresses for each of the POP3 user
>accounts and made sure that their domain was company.local. I am assuming
>that Exchange is trying to deliver the email to itself but since there is
no
>company.com email address it send an NDR to sender. Should I set up an
>internal MX record to point company.com email to the external ISP account
or
>is it an internal SMTP routing issue?
>
>All help appreciated!
>
>
>
Thanks for posting your question.
Do you have Exchange configured to be authortative for the company.com
domain? This issue is seen mostly when the user is configuring a POP3
account with a domain that is not local, for example, trying to get e-mail
down through the POP3
Connector from Comcast.net or any other ISP.

Since we are downloading e-mails on the POP3 Connector from a domain that
this server is not responsible for, we should not change the primary
address on the Default domain policy. Due to the way the POP3 Connector in
SBS 2003 works, we need add a secondary SMTP address (Not responsible) to
match the ISP's domain that we are trying to download through the POP3
Connector. After that, we can configure the User not to get updates from
the Recipient Policy and configure the primary SMTP address for that user
with the ISP's e-mail address (So the Reply-To when the users sends e-mail
is correct).

This is the description on the steps for the resolution:

Open Exchange System Manager
Expand Recipients, Recipient Policies.
Open the properties for the Default Policy.
Go to the E-Mail Addresses (Policy) tab
Right now you should have an entry for your local active directory domain
and for
an X400 address.
Make sure you do not have an entry with your ISP's domain or a domain that
you are
not responsible for.
Click New, select SMTP.
In the address type the domain you are receiving e-mail for using the Pop3
Connector. (@contoso.com), Un-Check "This Exchange Organization is
responsible for
all mail delivery to this address".
Put a check on the newly added address, DO NOT CHANGE THE PRIMARY.

OK the changes and acknowledge the warnings.

Open the SBS Server Management console, click on USERS.
Find the User that is receiving the POP3 Connector e-mails and open it
(double
click).
Go to the E-mail addresses tab.
Uncheck (on the bottom) "Automatically Update e-mail addresses based on the
Recipient Policy.
Make the "user@contoso.com" the Primary email, do not remove any other
address from
here.
Ok the changes.

Proceed to re-start IIS, for that, open a command prompt and type IISRESET
followed
by Enter/Return.

Please keep us updated on your progress.
Thanks! 

--
Wesley Kendall
Small Business Server Product Support
This posting is provided "AS IS" with no warranties, and confers no rights.
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