RE: Email messages stuck in unreachable destination queue

Hello Mark,

Thank you for posting here.

According to your description, I understand that you get stuck emails when
you configure sharing an SMTP address space in Exchange Server 2003 thru
KB321721. If I have misunderstood the problem, please don't hesitate to let
me know.

Based on my research, it seems like you do not block the open SMTP relaying
on the Exchange server. I suggest we try the following steps to see if we
can resolve this issue:

Configure the Exchange Server to block open SMTP relaying:

Note: A webcast is available that demonstrates how to configure Exchange
Server to block open SMTP relaying. To view this webcast, click the
following link:
http://support.microsoft.com/servicedesks/ShowMeHow/101904_2.asx

There are two Exchange Server components that permit SMTP relaying to be
turned on or off:
The Default SMTP Virtual Server
The SMTP Connector

Additionally, if the server is running Microsoft Internet Security and
Acceleration (ISA) Server 2000, the server may be an open relay if the
following conditions are true:
ISA Server is configured with a server publishing rule for the SMTP
protocol.
127.0.0.1 is in the list of IP addresses that are allowed to relay in the
properties of the default SMTP Virtual Server.

To check the properties on the Default SMTP Virtual Server, follow these
steps:
1. Click Start, click All Programs, click Microsoft Exchange, and then
click System Manager.
2. Expand Servers, expand Servername , expand Protocols, and then expand
SMTP.

If the server is an upgrade from Small Business Server 4.x, expand
Administrative Groups, expand Servername , expand Servers, expand
Servername , expand Protocols, expand SMTP.

3. Right-click Default SMTP Virtual Server and then click Properties.
4. Click the Access tab.
5. Click the Relay button at the bottom.
6. The default settings block open relay. The default settings are as
follows:
a. Select Only the list below.
b. The Computers dialog box shows Access Granted to the Internal IP address
of the Small Business Server network and to the external IP address (if the
server has more than one network card.)
c. Make sure that Allow all computers which successfully authenticate to
relay, regardless of the list above is selected.

7. Set the Default SMTP Virtual Server configuration for relaying as
indicated, which restores its settings to their defaults.

To check the properties for the SmallBusiness SMTP Connector, follow these
steps:
1. In the Exchange System Manager, expand Connectors, and then locate the
SmallBusiness SMTP Connector.

If the server is an upgrade from Small Business Server 4.x, expand
Administrative Groups, expand Servername , and then expand Connectors.

Note: The SmallBusiness SMTP Connector is created when you run the Small
Business Server 2000 Internet Connection Wizard. If you have manually
created an SMTP connector, it may not be named SmallBusiness SMTP
connector. Also be aware that the SMTP connector is not required for
external mail flow. The absence of a connector may not indicate a problem.

2. Right-click the SmallBusiness SMTP connector (or on the connector name
that you manually created), and then click Properties.
3. Click the Address Space tab.
4. The default settings (when this connector is created by means of the
Small Business Server 2000 Internet Connection Wizard) block open relay.
The default settings are:
Address Space -Type: SMTP
Address: *
Cost: 1
The Connector Scope is Entire Organization.
Allow messages to be routed to these domains is cleared (not selected).

5. Configure the SMTP Connector as indicated to restore its settings to
their default values.

For detail info:
How to block open SMTP relaying and clean up Exchange Server SMTP queues in
Windows Small Business Server
http://support.microsoft.com/?id=324958

Meanwhile, to accept mail from domains that are shared between your
Exchange organization and another SMTP server, set up an SMTP connector. To
do this, follow the steps in the following.

Domains that are not local to your Exchange organization
To accept mail from domains that are not local to your Exchange
organization, create an SMTP connector. For more information about how to
configure an SMTP connector, click the following article number to view the
article in the Microsoft Knowledge Base:
How to configure the SMTP connector in Exchange 200x
http://support.microsoft.com/?id=265293

However, when you add the domain to your recipient policies so that your
users can receive mail from the address, click to clear the This Exchange
Organization is responsible for all mail delivery to this address check box.

For detail info:
How to troubleshoot mail relay issues in Exchange Server 2003 and in
Exchange 2000 Server
http://support.microsoft.com/?id=895853

If we can not resolve the issue after we perform the above steps, please
kindly help me collect some information for further investigation:

Please send me the exchange MPS report for further analysis.

a. Visit
http://download.microsoft.com/download/b/b/1/bb139fcb-4aac-4fe5-a579-30b0bd9
15706/MPSRPT_Exchange.EXE to download the file.
b. Run the MPSRPT_Exchange.EXE on the server box.
c. Wait for 10~15 minutes.
d. Open Windows explorer, navigate to %SYSTEMROOT%\MPSReports\Exchange\cab\
e. Send the .cab file directly to me at v-terliu@xxxxxxxxxxxxx

Hope these steps will give you some help.

Thanks and have a nice day!

Best regards,

Terence Liu(MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

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--------------------
| From: "MarkR" <markr@xxxxxxxxxxxxxxxxx>
| Subject: Email messages stuck in unreachable destination queue
| Date: Mon, 11 Jun 2007 12:19:19 -0400
| Lines: 25
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.2900.3028
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028
| X-RFC2646: Format=Flowed; Original
| Message-ID: <e$FDHSErHHA.4836@xxxxxxxxxxxxxxxxxxxx>
| Newsgroups: microsoft.public.windows.server.sbs
| NNTP-Posting-Host: adsl-67-38-157-109.dsl.dytnoh.ameritech.net
67.38.157.109
| Path: TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP05.phx.gbl
| Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:43135
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| Our SBS 2003 Premium has been rock solid for a long time.
|
| Recently I added a new SMTP connector to relay messages to a new company
| office. The new office has a its own SBS2003 premium with its own
different
| internal and external domain names. The employees in the two offices
share
| the external email domain name "xyz.com" so everyting comes into the
| original office. I have set up contacts in exchange to forward emails to
| the folks in Florida who have a separate exchange with the public domain
| "xyz-fla.com".
|
| I followed the info contained in KB321721 to set things up. I first
| followed method 1 as listed but was getting the stuck emails, so I tried
| method 2 with the same results. The only emails getting held up are to
| outside email addresses. I am currently resetting the SMTP service every
15
| minutes to get the emails to go. When the SMTP service is first
restarted,
| the emails work for a while, but eventually they will agian get stuck.
We
| use a smart host to forward our emails at the DSL provider, but I even
| changed the setting to DNS and it still did not fix the problem. The
emails
| relayed to the Florid office do not seem to be affected by this problem.
|
| Any help is appreciated.
|
| Mark
|
|
|

.