Exchange 2007 POP3 Setup

I am trying to configure POP3 access on my Exchange 2007 server.  I have the POP3 service set to automatic, and started.  I have created a new user, gave them a mailbox, and enabled POP3 in their Email Features settings.  I am unable to connect when configuring the Outlook client.  I have also opened port 110 on my firewall and directed data on that port to my email server.  Not sure what I am missing.  Please help!!
BSModlinAsked:
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Glen KnightCommented:
OK thats using SMTP.

You use SMTP to send and POP3 to collect.
So thia would use port 25
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Glen KnightCommented:
Are younlogging in using username of DOMAIN\USername?

Does the exchange Alias match the username that is under the Account tab in Active Directory Users and Computers?
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BSModlinAuthor Commented:
Yes, I am logging in using domain\username...... And yes the ALIAS matches.
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Glen KnightCommented:
do you get any error messages?
And port 110 is definately forwarded to your exchange server?

Does it work from inside your network?
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BSModlinAuthor Commented:
This is what I get internally


Capture.JPG
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Glen KnightCommented:
Can you try using the UPN to login?
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BSModlinAuthor Commented:
I have tried that as well.  What could be the possible cause?  Any settings as far as authentication goes? SSL?
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Glen KnightCommented:
In the Exchange Management Console, navigate to Server Configuration > Client Access > POP3 IMAP4 tab select properties.

What do you have selected under authentication?

Also can you try connecting using SSL POP3 on port 995?
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BSModlinAuthor Commented:
I have Secure Logon selected.  I will try port 995 with SSL.
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BSModlinAuthor Commented:
I cannot get POP3 or IMAP to connect internally or externally.  I rebooted the mail server last night and still no change.  What can I do to troubleshoot this issue?
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BSModlinAuthor Commented:
I am getting these 2 errors in the event viewer:

Log Name:      Application
Source:        MSExchangeTransport
Date:          1/6/2010 8:40:44 AM
Event ID:      12014
Task Category: TransportService
Level:         Error
Keywords:      Classic
User:          N/A
Computer:     "Mailserver.domain.local"
Description:
Microsoft Exchange couldn't find a certificate that contains the domain name "Mailserver.domain.local" in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector Outbound Mail to Internet with a FQDN parameter of sasmail.StructuredAssetServices.local. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key.
Event Xml:

 
   
    12014
    2
    12
    0x80000000000000
   
    174681
    Application
    "Mailserver.domain.local"
   
 
 
    "Mailserver.domain.local"
    Outbound Mail to Internet
 



and

Log Name:      Application
Source:        MSExchangeIMAP4
Date:          1/6/2010 8:43:02 AM
Event ID:      1102
Task Category: (1)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      "Mailserver.domain.local"
Description:
The IMAP4 service failed to connect using SSL or TLS encryption.  A valid certificate is not configured to respond to SSL/TLS connections.  Check the configured hostname as well as which certificates are installed in the Personal Certificates store of the Computer.
Event Xml:

 
   
    1102
    2
    1
    0x80000000000000
   
    174684
    Application
    "Mailserver.domain.local"
   
 
 
 


Hopefully this will help!!

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BSModlinAuthor Commented:
Also found this one:

Log Name:      Application
Source:        MSExchangePOP3
Date:          1/6/2010 8:36:34 AM
Event ID:      2007
Task Category: (1)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      "Mailserver.domain.local"
Description:
A certificate for the host name "MailServer" could not be found. SSL or TLS encryption cannot be made to the POP3 service.
Event Xml:

 
   
    2007
    2
    1
    0x80000000000000
   
    174635
    Application
    "Mailserver.domain.local"
   
 
 
    sasmail
 
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BSModlinAuthor Commented:
It looks to me like there is an issue with the certificate.  Is there a way to fix this, or can I not require the cert.?
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Glen KnightCommented:
Can you disable all the authentication requirements and then restart the POP3 service.
Then try connecting on port 110
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BSModlinAuthor Commented:
Sorry, but can you explain where to go so I do not miss anything?  Much appreciated!!
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Glen KnightCommented:
In the Exchange Management Console, navigate to Server Configuration > Client Access > POP3 IMAP4 tab select properties.

What do you have selected under authentication?
Can you set it to Plain text logon, then restart the Microsoft Exchange POP3 Service.
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BSModlinAuthor Commented:
OK, now we are making some progress.  I selected Plain Text for authentication and restarted the POP3 service.

Now it works internally, but not externally.  I get the following error message.  I am using the IP address for incoming and outgoing mail flow, both for internal and external configurations.
POP.JPG
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BSModlinAuthor Commented:
Also, I CAN successfully telnet into port 110 from outside the organization into the public IP of the Mail Server.
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BSModlinAuthor Commented:
So just to be clear.... I would need to open port 25 from outside inbound to my email server?
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Glen KnightCommented:
Correct but that should already be open anyway but might be restricted by IP addresd?
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BSModlinAuthor Commented:
It is NOT open currently because my inbound mail goes to a SPAM appliance first.  I will open the port and test.
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Glen KnightCommented:
That might be a bit tricky then, if your mail goes to a spam appliance this will probabky already be uaing port 25?
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BSModlinAuthor Commented:
Thank You!!
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