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Exchange server 2010 Pop/Imap Error

Posted on 2010-11-16
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Last Modified: 2012-05-10
I am able to log into my exchange server with pop/imap but get an error message trying to retrieve the messages.  I tried logging in with telnet and I can list all the messages, but when I try to retrieve any I get -ERR Server Unavailable. 21
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Question by:Computer-Innovations
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Expert Comment

by:JuusoConnecta
ID: 34188001
By design when you install exchange 2010, IMAP and POP services are not enabled. You will have to manually go to services on the computer running exchange server 2010 and start the services and set the startup type to -automatic
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by:Computer-Innovations
ID: 34188926
This is not the issue.  As I stated earlier, I can log into the server and list all the messages. I just can't retrieve them.
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by:JuusoConnecta
ID: 34194468
So I take it that you have verified that the services are running ?

Can you run test-imapconnectivity and test-popconnectivity from the EMS and post your results ?

Also if you have a firewall check that port 143 and 110 are open.
If you are using SSL make sure that the additional ports 995 and 993 are open
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Author Comment

by:Computer-Innovations
ID: 34198162
Here is the result of the test-popconnectivity

CasServer  LocalSite     Scenario        Result  Latency(MS) Error
---------  ---------     --------        ------  ----------- -----
EXCHANGE   Default-Fi... Test POP3 Co... Failure             System.IO.IOException...

The test-imapconnectivity produces no failures, but it still doesn't work.
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Expert Comment

by:JuusoConnecta
ID: 34203043
do the following in EMS and post results:
test-popconnectivity | fl

Do you have a firewall or a smarthost in your environment ?
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Author Comment

by:Computer-Innovations
ID: 34205180
I have a sonic wall in place, but I get these errors if I try to connect from inside the firewall.  Here is the output you asked for.

Creating a new session for implicit remoting of "Test-PopConnectivity" command...


RunspaceId                  : 46b24329-5e3f-4018-b614-3ae6e9e1f3d9
LocalSite                   : Default-First-Site-Name
SecureAccess                : False
VirtualDirectoryName        :
Url                         :
UrlType                     : Unknown
Port                        : 995
ConnectionType              : Ssl
ClientAccessServerShortName : EXCHANGE
LocalSiteShortName          : Default-First-Site-Name
ClientAccessServer          : EXCHANGE.david-city.local
Scenario                    : Test POP3 Connectivity
ScenarioDescription         : Connect to server using POP3 protocol, search for the test message, and delete it along w
                              ith any messages that are older than 24 hours.
PerformanceCounterName      : POPConnectivity-Latency
Result                      : Failure
Error                       : System.IO.IOException: Unable to read data from the transport connection: An existing con
                              nection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException:
                              An existing connection was forcibly closed by the remote host
UserName                    : randy
StartTime                   : 11/24/2010 7:33:28 AM
Latency                     : 00:00:09.4668654
EventType                   : Error
LatencyInMillisecondsString :
Identity                    :
IsValid                     : True


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Expert Comment

by:JuusoConnecta
ID: 34205349
can you do a get-popsettings from EMS:

Information should look like the following:
UnencryptedOrTLSBindings  SSLBindings                       LoginType                         X509CertificateName
------------------------  -----------                       ---------                         -------------------
{:::110, 0.0.0.0:110}     {:::995, 0.0.0.0:995}             SecureLogin                       webmail.domain.com

if you do a get-popsettings | fl

Your configuration should like somewhat the following:
ProtocolName                      : POP3
MaxCommandSize                    : 512
MessageRetrievalSortOrder         : Ascending
UnencryptedOrTLSBindings          : {:::110, 0.0.0.0:110}
SSLBindings                       : {:::995, 0.0.0.0:995}
InternalConnectionSettings        : {cashub1.domain.dom:995:SSL, cashub1.techtacon.dom:110:TLS}
ExternalConnectionSettings        : {webmail.domain.com:995:SSL, webmail.domain.com:110:TLS}
X509CertificateName               : webmail.techtacon.com
Banner                            : The Microsoft Exchange POP3 service is ready.


If you dont have the externalconnection (or internalconnectionsettings) user the following cmdlet to set the externalconnectionsettings:
Set-PopSettings -ExternalConnectionSettings 'webmail.domain.com:995:SSL','webmail.domain.com:110:TLS'
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Author Comment

by:Computer-Innovations
ID: 34205959
You were right about not having the externalconnectionsettings.  However after setting them, the problem still exists.


[PS] C:\Windows\system32>get-popsettings | fl


RunspaceId                        : 46b24329-5e3f-4018-b614-3ae6e9e1f3d9
Name                              : 1
ProtocolName                      : POP3
MaxCommandSize                    : 512
MessageRetrievalSortOrder         : Ascending
UnencryptedOrTLSBindings          : {:::110, 0.0.0.0:110}
SSLBindings                       : {:::995, 0.0.0.0:995}
InternalConnectionSettings        : {Exchange.david-city.local:995:SSL, Exchange.david-city.local:110:TLS}
ExternalConnectionSettings        : {mail.naimon.net:110:TLS, mail.naimon.net:995:SSL}
X509CertificateName               : mail.naimon.net
Banner                            : The Microsoft Exchange POP3 service is ready.
LoginType                         : PlainTextLogin
AuthenticatedConnectionTimeout    : 00:30:00
PreAuthenticatedConnectionTimeout : 00:01:00
MaxConnections                    : 2000
MaxConnectionFromSingleIP         : 2000
MaxConnectionsPerUser             : 16
MessageRetrievalMimeFormat        : BestBodyFormat
ProxyTargetPort                   : 110
CalendarItemRetrievalOption       : iCalendar
OwaServerUrl                      :
EnableExactRFC822Size             : False
LiveIdBasicAuthReplacement        : False
SuppressReadReceipt               : False
ProtocolLogEnabled                : False
EnforceCertificateErrors          : False
LogFileLocation                   : C:\Program Files\Microsoft\Exchange Server\V14\Logging\Pop3
LogFileRollOverSettings           : Daily
LogPerFileSizeQuota               : 0 B (0 bytes)
ExtendedProtectionPolicy          : None
EnableGSSAPIAndNTLMAuth           : True
Server                            : EXCHANGE
AdminDisplayName                  :
ExchangeVersion                   : 0.10 (14.0.100.0)
DistinguishedName                 : CN=1,CN=POP3,CN=Protocols,CN=EXCHANGE,CN=Servers,CN=Exchange Administrative Group (
                                    FYDIBOHF23SPDLT),CN=Administrative Groups,CN=First Organization,CN=Microsoft Exchan
                                    ge,CN=Services,CN=Configuration,DC=david-city,DC=local
Identity                          : EXCHANGE\1
Guid                              : 3618fe6e-440a-42a7-babc-f176f5e83c39
ObjectCategory                    : david-city.local/Configuration/Schema/ms-Exch-Protocol-Cfg-POP-Server
ObjectClass                       : {top, protocolCfg, protocolCfgPOP, protocolCfgPOPServer}
WhenChanged                       : 11/24/2010 9:06:12 AM
WhenCreated                       : 10/26/2010 11:26:48 PM
WhenChangedUTC                    : 11/24/2010 3:06:12 PM
WhenCreatedUTC                    : 10/27/2010 4:26:48 AM
OrganizationId                    :
OriginatingServer                 : pdc.david-city.local
IsValid                           : True
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LVL 11

Expert Comment

by:JuusoConnecta
ID: 34211053
Still getting the same error message when doing a test-popconnectivity ? or is it a new one now ?
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Author Comment

by:Computer-Innovations
ID: 34213478
Looks like the same error... here is the output..



RunspaceId                  : 46b24329-5e3f-4018-b614-3ae6e9e1f3d9
LocalSite                   : Default-First-Site-Name
SecureAccess                : False
VirtualDirectoryName        :
Url                         :
UrlType                     : Unknown
Port                        : 995
ConnectionType              : Ssl
ClientAccessServerShortName : EXCHANGE
LocalSiteShortName          : Default-First-Site-Name
ClientAccessServer          : EXCHANGE.david-city.local
Scenario                    : Test POP3 Connectivity
ScenarioDescription         : Connect to server using POP3 protocol, search for the test message, and delete it along w
                              ith any messages that are older than 24 hours.
PerformanceCounterName      : POPConnectivity-Latency
Result                      : Failure
Error                       : System.IO.IOException: Unable to read data from the transport connection: An existing con
                              nection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException:
                              An existing connection was forcibly closed by the remote host
UserName                    : randy
StartTime                   : 11/25/2010 11:17:11 AM
Latency                     : 00:00:09.1462448
EventType                   : Error
LatencyInMillisecondsString :
Identity                    :
IsValid                     : True
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JuusoConnecta earned 500 total points
ID: 34216081
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Author Comment

by:Computer-Innovations
ID: 34217860
This also did not work :(
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Author Comment

by:Computer-Innovations
ID: 34217887
I stand corrected.  I had forgotten to restart the POP service after that last change.  All seems to be working now.  Thank you so much.
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Expert Comment

by:JuusoConnecta
ID: 34224976
Good to hear that you got it resolved =]
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