RE: ExChSrv sends multiple copies of emails to users via POP3

Hello Charles,

Firstly thank you for all your help...
I have narrowed this down to what is my issue.
If you could help me it would be great.

Setup: My ISP has a catchall address for domain XYZ. In a POP3 Setup so
anything @XYZ falls into the catchall pop3 account. It has 5 exceptions, this
is for the users that are not part of the SBS Domain, so when a email comes
to them the catchall filters them out and delivers it to their own pop3
accounts. which they connect to and download.

My Exchange Server use's a POP3 connector which connects to the pop3 account
(lets call it all@xxxxxxxxxx) and downloads the emails.
Exchange then distrubutes those emails successfully.

However, when a client on the LAN sends a email to a person who is not in
the Domain (the 5 exceptions) it fails, since it can not find that user
1@xxxxxxxxxx - which is correct because they are not listed in the AD.
So in the Connector in the Exchange SYSTEM MANAGER -
Server\Server\Protocols\SMTP\ virtual server, in the properties in MESSAGES,
i have enabled Forward all mail with unresolved recipients to host - and use
their ISP's DNS.

What happens is when a email comes into the catch all that is incorrectly
addressed, it uses the FORWARD fucntion, sends to the ISP, the ISP then
delivers it to my Catchall Address again, and SBS then downloads the email
again.
Which can cause major greif if thre is more than 1 person on that header
(TO, CC or BCC field)

Is there any way I can stop this from happening.

I have already setup on the SBS POP3 Conenctor to deliver failed mail to a
user account as well.

I have a major issue at the moment I do not how to fix this... is there any
way???

Regards Ash

""Charles Yang [MSFT]"" wrote:

> HI,
>
> Welcome to SBS newsgroup.
>
> Issue description:
> ==============
>
> I understand that you encountered problem when receiving email which send
> to multiple internal user.
>
> Analyzing and suggestion:
> ===============
>
> Before we go any further, can I assume that you used POP3 connectors to
> receive emails from ISP's global mailbox?
>
> Generally speaking, the issue should be related to routing methods you set
> on your POP3 connectors. By default, we can set the routing rules to route
> the email to exact user via the email address on the CC or TO fields.
>
> For example, you can set a rule to route all the email with a@xxxxxxxxxx on
> the CC or To field to the exact Exchange mailbox. Please set the routing
> rule according to the steps below:
>
> 1. Open the POP3 management node on the Server managements.
> 2. In the POP3 mailbox type, please choose Global mailbox.
> 3. Then set the routing rules, configure a rule for special Exchange
> mailbox, for example set a@xxxxxxxxxx as the setting on the text fields in
> TO or CC fields.
>
> This will help the POP3 connector only route the emails with a@xxxxxxxxxx
> on the CC or To field email to the exact Exchange mailbox.
>
> If the issue still exists, please kindly check how many emails you download
> from ISP side, make sure that you did not receive multiple emails from ISP
> via POP3 connectors.
>
> You can also refer to the KB article below:
>
> 264249 Exchange Server Connector for POP3 Mailboxes deliver multiple copies
> of messages
> http://support.microsoft.com/?id=264249
>
> I really appreciate your time to cooperate on this issue, please feel free
> to post back. I am glad to be of further assistance.
>
>
>
> Best regards,
>
> Charles Yang (MSFT)
>
> Microsoft CSS Online Newsgroup Support
>
> Get Secure! - www.microsoft.com/security
>
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> --------------------
> | Thread-Topic: ExChSrv sends multiple copies of emails to users via POP3
> | thread-index: AcXkyTMg78OZ62h1TcyFhop/XF7iyg==
> | X-WBNR-Posting-Host: 220.245.178.134
> | From: "=?Utf-8?B?QXNod2luIEAgU3VtaXg=?="
> <AshwinSumix@xxxxxxxxxxxxxxxxxxxxxxxxx>
> | Subject: ExChSrv sends multiple copies of emails to users via POP3
> | Date: Tue, 8 Nov 2005 17:02:04 -0800
> | Lines: 26
> | Message-ID: <0FA856C0-EB74-4E52-AF61-D35A6295C5FD@xxxxxxxxxxxxx>
> | MIME-Version: 1.0
> | Content-Type: text/plain;
> | charset="Utf-8"
> | Content-Transfer-Encoding: 7bit
> | X-Newsreader: Microsoft CDO for Windows 2000
> | Content-Class: urn:content-classes:message
> | Importance: normal
> | Priority: normal
> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
> | Newsgroups: microsoft.public.windows.server.sbs
> | NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
> | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGXA03.phx.gbl
> | Xref: TK2MSFTNGXA02.phx.gbl microsoft.public.windows.server.sbs:220242
> | X-Tomcat-NG: microsoft.public.windows.server.sbs
> |
> | Hello Guys
> |
> | My question is this, that I have SBS 2003 running Exchange Server.
> |
> | I have a catchall address setup at my WebHosting company (lets call it
> | XYZ@xxxxxxxxxx). WHen my exchsrv connected to this box it downloads all
> the
> | emails correctly, and distributes (as per the setting within the Manage
> POP3
> | Emails - Mailbox INformation - Global Mailbox and the Email domain
> name)...
> | them without a problem, but...
> |
> | Where my problem lies, is when there is an email with multiple recipients
> | within the catchall it sends the email 3, 4 5, 10 times pending on the
> amount
> | of recipients for that email
> |
> | Expample - I send a email to a@xxxxxxxxxx, b@xxxxxxxxxx and c@xxxxxxxxxx
> | (all these address fall into my catchall address of XYZ@xxxxxxxxxx)
> | WHen my exchsrv downloads this email, it will send 3 copies to the 3
> users
> | metioned above, so a@xxxxxxxxxx will get 3 copies of the email.
> |
> | This is happening quiet regularly now, and doing more so... it is even
> | sending the same email up to 50 times to the same user...
> |
> | Can anyone please give me some advice on this area... it would be greatly
> | appericated.
> |
> | Thank you in advance.
> |
>
>
.

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