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Exchange 2007 POP3 Login Failur

Posted on 2009-05-15
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Last Modified: 2013-11-29
We have a new Exchange 2007 install.  It is 20007 w/ SP1 on a 64bit Windows 2008 server.  I am unable to get users logged in via POP3.  All other functionality is working, meaning connecting via Outlook with an exchange profile via rpc and rpc over https (outlook anywhere) both 2003 and 2007 outlook clients, sending and receiving with these profiles.  Owa works fine.  I am even able to send smtp mail from outlook (not using exchange profile), authenticatre to the server (no ssl/tls, using basic) to send via smtp direct from outlook.  A little more about our setup.  Our exchange server is part of an internal domain.  One of our two domain controllers is on the same subnet as the exchange server.  We use a certficate we created using our own CA server and have that CA root in all users systems.  POP3 service is turned on and it is enabled at the mailbox level.  The outlook error we recive is:  LOG ONTO INCOMING MAIL SERVER (POP3): OUTLOOK COULD NOT CONNECT OT HTE INCOMING POP3 MAIL SERVER BECAUSE THE SERVER DID NOT ACCEPT YOU USERNAME OR PASSWORD.  I know the usernams and password are good since I am able to use SMTP.
When I start the pop3 service after a reboot, or manually restart the service, the following eror appears in the event logs:
Log Name:      Application
Source:        MSExchangePOP3
Date:          5/14/2009 10:35:31 PM
Event ID:      2007
Task Category: (1)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      host.localdomain.local
Description:
A certificate for the host name "mailhost.externaldomain.com" could not be found. SSL or TLS encryption cannot be made to the POP3 service.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchangePOP3" />
    <EventID Qualifiers="49156">2007</EventID>
    <Level>2</Level>
    <Task>1</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2009-05-15T04:35:31.000Z" />
    <EventRecordID>3762</EventRecordID>
    <Channel>Application</Channel>
    <Computer>host1.localdomainname.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>mailhost.externaldomain.com</Data>
  </EventData>
</Event>
(obviosly I have changed the internal and external FQDN)

After a pop3 login fails, the following entry is found in the event logs:

Log Name:      Application
Source:        MSExchangeTransport
Date:          5/15/2009 8:43:04 AM
Event ID:      1035
Task Category: SmtpReceive
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      host1.localdomain.local
Description:
Inbound authentication failed with error LogonDenied for Receive connector Default host1. The authentication mechanism is Login. The source IP address of the client who tried to authenticate to Microsoft Exchange is [x.x.x.125].
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchangeTransport" />
    <EventID Qualifiers="32772">1035</EventID>
    <Level>3</Level>
    <Task>1</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2009-05-15T14:43:04.000Z" />
    <EventRecordID>3878</EventRecordID>
    <Channel>Application</Channel>
    <Computer>host1.localdomain.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>LogonDenied</Data>
    <Data>Default host1</Data>
    <Data>Login</Data>
    <Data>X.X.X.125</Data>
  </EventData>
</Event>

Here are ouputs of some shell commands:
POP3 Settings:
UnencryptedOrTLSBindings  SSLBindings   LoginType     X509CertificateName
------------------------  -----------   ---------     -------------------
{:::110, 0.0.0.0:110}     {:::995, 0... PlainTextL... mailhost.externaldomain.com

Get-ExchagneCertifiacate:

Thumbprint                                Services   Subject
----------                                --------   -------
xxxxxxxxxxxxxxxxxxxxxxx  IP.WS      CN=mailhost.externaldomain.com, OU...

Assistance Apreciated

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Question by:jtmoske
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jtmoske earned 0 total points
ID: 24432786
This was resolved w/o experts-exchange help.
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by:kedarroy
ID: 24434123
what was the solution?
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