?
Solved

Trouble connecting Exchang 2003 using POP3

Posted on 2011-09-12
6
Medium Priority
?
468 Views
Last Modified: 2012-08-14
I am having trouble connecting external clients to use POP3 on an Exchange 2003 server.

If I am internal, or connected over VPN, I can type the name of the incoming mail server as the internal name (ie mailsrvr.domain.local) and everything works with no problems. In this scenario, I am using mail.domain.com as the SMTP server.

If I try to connect an external client however, using this info:
POP3 server: mail.domain.com
SMTP Server: mail.domain.com

I get the following error from Outlook:

"Task 'mail.domain.com - Receiving' reported error (0x80042108) : 'Outlook is unable to connect to your incoming (POP3) email server. If you continue to receive this message, contact your server administrator or Internet service provider.'

We are using a hardware firewall (Linksys R0V42) and I have the following Access Rules configured:

Priority: 1
Policy Name: POP3
Enabled: Checked
Action: Allow
Service: POP3[110]
Interface: WAN1
Source: Any
Destination: Any
Time: Always

and

Priority: 2
Policy Name: SSL
Enabled: Checked
Action: Allow
Service: HTTPS[443]
Interface: WAN1
Source: Any
Destination: Any
Time: Always

The POP3 service is started and the default virtual server is configured for port 110.

I only have Basic authentication and Simple Authentication and Security Layer checked. Requires SSL is NOT checked - though I am using SSL for OWA and Active Sync.

Why else could I not be able to connect to the POP3 connector?

Thanks you!!
0
Comment
Question by:IT_Service
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 77

Expert Comment

by:Rob Williams
ID: 36524114
POP access to Exchange is not enabled by default. Though you can do so a user will have a far better experience and far better security using rpc/http which is the intended remote connection method with SBS 2003/Exchange 2003:
http://www.lan-2-wan.com/SBS.htm#q5
0
 
LVL 2

Author Comment

by:IT_Service
ID: 36524169
Hello, thanks for the response.

These clients already have POP3 email configured on their remote systems for other account; their preferred connection method is to use POP3. Also, there is not a desire to keep their mail on the mail server. I use HTTP/RPC on other servers, but don't want to do so here.

Just noticed that using http://canyouseeme.org/ I cannot get to Port 110.

I can get a response from port 110 internally.

Not sure where my firewall config could be wrong here.

Any ideas?

thanks!
0
 
LVL 77

Accepted Solution

by:
Rob Williams earned 750 total points
ID: 36524207
I trust you have forwarded port 110 from the router to the SBS? and, you do not have any installed software firewalls that can be blocking it?

I am afraid I am not a lot of help. In 9 years of supporting SBS servers I have never come across anyone using POP collection of e-mail from SBS, not that you cannot do so. You do also have to enable the POP3 virtual server. Without it the server is not "listening". The following may be of some help:
http://www.mombu.com/microsoft/windows-small-business-server-2003/t-enable-pop3-collection-from-exchange-2003-on-sbs-2003-210352.html
0
Is Your AD Toolbox Looking More Like a Toybox?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

 
LVL 11

Assisted Solution

by:madhatter5501
madhatter5501 earned 750 total points
ID: 36524635
what happens when you try to connect to the pop server using telnet

for example - telnet mail.domain.com 110
0
 
LVL 2

Author Comment

by:IT_Service
ID: 36526550
I could not connect over telnet either.

I did find the issue ... it was the firewall  - port forwarding was missing.

thanks for the responses; i will divide up the points.
0
 
LVL 2

Author Closing Comment

by:IT_Service
ID: 36526556
Thanks for the advice and troubleshooting help!
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to install and use the NTBackup utility that comes with Windows Server.
Check out this step-by-step guide for using the newly updated Experts Exchange mobile app—released on May 30.
In this video we show how to create an Address List in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Organization >> Ad…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Suggested Courses
Course of the Month12 days, 22 hours left to enroll

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question