Enabling pop3 access on Exchange server for accounts - how?

Easy points maybe for someone.

We have an exchange server running our email and most connect via Outlook 2003. We have one user with a personal blackberry that wants to collect a copy of his email (so via a pop3 account setup on his blackberry).

However, on testing myself I cannot get pop3 access to work.
I set up Outlook to try an collect email from the server using Pop3 and get an error message:

"Receiving reported error (Ox800CCC9O) Your incoming (POP3) e-mail server has reported an internal error. IF you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: -ERR AVG POP3 Proxy Server: Cannot connect to the mail server! "

I have checked on the accounts from ACtive directory and it has been enabled for Pop3 access.

Can I confirm what steps are necssary to enable pop3 access?

Thanks in advance.
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afflik1923Author Commented:
Just scanning that articele quickly note that we do not have ISA server. Is that going to be a problem?
No. The only part that you need  is how to enable POP3 (which is not enabled by default).
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afflik1923Author Commented:
OK, I enabled the POP3 service and it's showing as started.

Do I need to open up ports on the firewall as well to direct POP traffic to the exchange server.

For the ingoing an doutgoing pop servers I used the public IP address of the exchange server (Well actually a domain name that translates to the IP address of the exchange server).

The error message received for sending and receiving are
!  - Sending reported error (Ox800CCC8O) : None ol the authentication methods supported by this client are supported by your server
!- Receiving reported error (Ox800CCC9O) : Your incoming (POP3) e-mail server has reported an internal error. IF you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: -ERR AVG POP3 Proxy Server: Cannot connect to the mail server!

(note the sending error does not occur if I disable my server requires authentication - but I get a "system administator" email error message in my inbox instead.)

Any more input appreciated.

afflik1923Author Commented:
boo hoo,

Still no luck with this. I have checekd that the pop service is running and it is.
I have opened up the port so that port 100 trffic is directed to the excahgne server
Error messages received (also trying to send an emai with the my server rquires authentication checked):

Sending reported error (Ox800CCC8D) : None of the authentication methods supported by this client are sported by you server.
! - Receiving reported error (Ox800CCC9O) : Your incomeg (POP3) e-m server has reported en Internal error. If you continue to receive this messege contact your server aànlnlstrator or Internet service provder (19). The server responded: -ERR AVG POP3 Proxy Server: Cannot connect to the m server!

I can see why there might be an error senidng. We also use a Barracuda SPAM firewall which email goes to fuirst (so port 25 directed to that), but I expect the receive email to work.

In Outlook check your internet email settings, select  more settings, outgoing server, and see if the box that says  " my outgoing server requires authentication" is checked. If it is, uncheck it. Let me know if this helps.
afflik1923Author Commented:
In that case teh emailed gotses out of the outbox but rght awaySystem Adminsitrator - Undeliverable message in my inbox hich says:

Your message did not reach some or all of the intended recipients.

      Subject:      testing
      Sent:      04/02/2008 17:21

The following recipient(s) cannot be reached:

      'myother@emailaddress.com' on 04/02/2008 17:21
            550 No such domain at this location (myother@emailaddress.com)
Ok. Now we are getting somewhere. The 550 error means that when your DNS tried to resolve the myother@mailaddress.com  It means that when the sending e-mail server went to search your DNS for MX/Host record for myother@emailaddress.com  it came back that it doesn't exist. So check your DNS settings on the Blackberry.
afflik1923Author Commented:
Now I'm confused!

OK I'll paint the whole picture to make sure I'm not missing anything out.
In the office we have Exchange server 2003 (running on Windows Server 2003).
All has been fine for a while until someone who is a part timer needs pop3 access to his email (he is already connected to another exchange on his blackberry).

So I went about to setup pop 3 access. Ithought I would first try it with my own account so I set up my account to collect email vi pop3 in Outlook 2007.
Howver when I try and get email I get the error messages described.
So right now blackberry is not in the picture.
DNS should not be messed up my end (althoguh I do se opendns but still shodl not be a problem) as, as far as I know, I do not have any other problems with other computing (therefore I get all my other emails and write this to you now on the same PC).

Does the above information change things?

Please help as I am most confused.
afflik1923Author Commented:
In the end actually used HTTPS to access the email but your guide was useful. Never worked out why not working for us via POP3 but motivatio to ciontinue invstigation wained after finding better alternative.
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