Re: Exchange 2003 - POP3 only delivers email to Administrator

Hi Simon,

Thank you for your reply and the detailed additional feedback on how you
were successful in resolving this issue. This information has been added to
Microsoft's database. Your solution will benefit many other users, and we
really value having you as a Microsoft customer.

As for the additional question, since you are using POP3 Connector to
retrieve incoming email from ISP POP3 mailboxes, and sending outgoing email
through DNS route or forward to ISP smarthost.

= If we don't start the default POP3 virtual server on the Exchange
Server to allow internet users access Exchange through POP3 services, we
don't need to allow the Inbound TCP 110 network traffic, and forward it to
Exchange Server. (Note: We need to allow outbound TCP 110 network traffic
to allow POP3 Connector to retrieve incoming email from ISP POP3 mailboxes)

= If we don¡¯t allow internet users send or relay email through the
default SMTP virtual server on the Exchange Server, we don't need to allow
the inbound TCP 25 network traffic, and forward it to Exchange Server.
(Note: We need to allow outbound TCP 25 network traffic to allow Exchange
Server to send outgoing email to destination email server or ISP smarthost)

Please also kindly check the following additional information:

Ports that Enable Remote Access to SBS Services

Port 21 enables external and internal file transfer
Port 25 enables incoming and outgoing SMTP mail
Port 80 (http://) enables all nonsecure browser access, including:
internal access to IIS Webs including the company Web, Windows SharePoint
Web, Windows SharePoint administration Web, and server monitoring and usage
reports Enables internal access to Exchange by OWA and OMA clients
Port 110 enables Exchange to accept incoming POP3 mail
Port 123 (UDP port) enables the system to synchronize time with an
external Network Time Protocol (NTP) server
Port 143 enables Exchange to accept incoming IMAP4-compliant messages
Port 220 enables Exchange to accept incoming IMAP3-compliant messages
Port 443 (https://) enables all secure browser access, including
external access to Exchange for Outlook 2003, OWA, and OMA clients;
required for external access to server monitoring and usage reports
Port 444 enables internal and external access to the SharePoint Web
Port 500 enables external VPN connections by using IPSec
Port 1701 enables external L2TP VPN connections
Port 1723 enables external PPTP VPN connections
Port 3389 enables internal and external Terminal Services client
connections
Port 4125 (Note: you can change this port in RRAS) enables external OWA
access to Exchange, plus internal and external HTTPS access to the client
Web site
Port 4500 Internet Key Exchange (IKE) Network Address Translation (NAT)
traversal

837368 The default POP3 and IMAP4 virtual servers are stopped and you
cannot
http://support.microsoft.com/?id=837368

Securing Your Windows Small Business Server 2003 Network
http://go.microsoft.com/fwlink/?LinkId=49933

I appreciate your time and cooperation. Please do not hesitate to let me
know if you have any further concerns, I am looking forward to hearing from
you.

Have a nice day!

Best regards,

Nathan Liu (MSFT)
Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security
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--------------------
>From: surveysimon@xxxxxxxxxxx
>Newsgroups: microsoft.public.windows.server.sbs
>Subject: Re: Exchange 2003 - POP3 only delivers email to Administrator
>Date: 8 Dec 2005 20:01:12 -0800
>Organization: http://groups.google.com
>Lines: 9
>Message-ID: <1134100872.875462.309780@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
>References: <1133489346.344659.59020@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> <lRdV73U#FHA.1236@xxxxxxxxxxxxxxxxxxxxx>
>NNTP-Posting-Host: 154.20.51.128
>Mime-Version: 1.0
>Content-Type: text/plain; charset="iso-8859-1"
>X-Trace: posting.google.com 1134100877 3611 127.0.0.1 (9 Dec 2005 04:01:17
GMT)
>X-Complaints-To: groups-abuse@xxxxxxxxxx
>NNTP-Posting-Date: Fri, 9 Dec 2005 04:01:17 +0000 (UTC)
>In-Reply-To: <lRdV73U#FHA.1236@xxxxxxxxxxxxxxxxxxxxx>
>User-Agent: G2/0.2
>X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1),gzip(gfe),gzip(gfe)
>Complaints-To: groups-abuse@xxxxxxxxxx
>Injection-Info: o13g2000cwo.googlegroups.com; posting-host=154.20.51.128;
> posting-account=FCquiA0AAAAwa2lyOV6RKkS6qsPMBmS6
>Path:
TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!newsfeed00.sul.t-online.de!t-onli
ne.de!border2.nntp.dca.giganews.com!border1.nntp.dca.giganews.com!nntp.gigan
ews.com!postnews.google.com!o13g2000cwo.googlegroups.com!not-for-mail
>Xref: TK2MSFTNGXA02.phx.gbl microsoft.public.windows.server.sbs:228943
>X-Tomcat-NG: microsoft.public.windows.server.sbs
>
>Thank you Nathan for your reply. I was able to sort everything out. I
>made sure of all the details were in place according to your
>instructions, and other posts too. None of that worked, so I recreated
>the user account, and everything is fine now. I have one question
>though, is port forwarding on my router necessary for me to be able to
>send and receive email through Exchange. I have both ports 25 and 110
>forwarded to my exchange server. Is that needed. Thank you for your
>helpful responses.
>
>

.

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