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exchange 2013 IMAP crashed after CU10

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  • exchange 2013 IMAP crashed after CU10

    IMAP crashed and not working after applying the CU10 on top of Exchange 2013 CU10. I read the KB that " This issue occurs because Internet Mail Access Protocol (IMAP) does not support the generic security services application programming interface (GSSAPI) as an authentication mechanism in a Microsoft Exchange Server 2013 environment "
    and I tried to enable Set-IMAPSettings –EnableGSSAPIAndNTLMAuth:$FALSE
    and no luck, still IMAP asking for a credentials again and again. POP is working fine.
    I can see the IMAP protocol log, there are msgs
    "IN:9933:SSL;ErrMsg=ProxyNotAuthenticated;LiveIdAR =OK""
    "authenticate,NTLM,"R=""l7z2 NO AUTHENTICATE failed."";"
    the IMAP settings are
    [PS] C:\Windows\system32>Get-ImapSettings | format-list


    RunspaceId : 32a6432b-de4f-4730-adf3-6595ccb25ce8
    ProtocolName : IMAP4
    Name : 1
    MaxCommandSize : 10240
    ShowHiddenFoldersEnabled : False
    UnencryptedOrTLSBindings : {[::]:143, 0.0.0.0:143}
    SSLBindings : {[::]:993, 0.0.0.0:993}
    InternalConnectionSettings : {essrv011.****.IN:993:SSL, essrv011.***.IN:143:TLS}
    ExternalConnectionSettings : {}
    X509CertificateName : email.***.ac.in
    Banner : The Microsoft Exchange IMAP4 service is ready.
    LoginType : SecureLogin
    AuthenticatedConnectionTimeout : 00:30:00
    PreAuthenticatedConnectionTimeout : 00:01:00
    MaxConnections : 2147483647
    MaxConnectionFromSingleIP : 2147483647
    MaxConnectionsPerUser : 16
    MessageRetrievalMimeFormat : BestBodyFormat
    ProxyTargetPort : 9933
    CalendarItemRetrievalOption : iCalendar
    OwaServerUrl :
    EnableExactRFC822Size : False
    LiveIdBasicAuthReplacement : False
    SuppressReadReceipt : False
    ProtocolLogEnabled : True
    EnforceCertificateErrors : False
    LogFileLocation : C:\Program Files\Microsoft\Exchange Server\V15\Logging\Imap4
    LogFileRollOverSettings : Daily
    LogPerFileSizeQuota : 0 B (0 bytes)
    ExtendedProtectionPolicy : None
    EnableGSSAPIAndNTLMAuth : False
    Server : ESSRV011
    AdminDisplayName :
    ExchangeVersion : 0.10 (14.0.100.0)
    DistinguishedName : CN=1,CN=IMAP4,CN=Protocols,CN=ESSRV011,CN=Servers, CN=Exchange Administrative Group
    (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=****,CN=Microsoft
    Exchange,CN=Services,CN=Configuration,DC=***,DC=AC ,DC=IN
    Identity : ESSRV011\1
    Guid : 4ed7aaa3-90b7-4c3b-b373-bccccf85fcf3
    ObjectCategory : ****.IN/Configuration/Schema/ms-Exch-Protocol-Cfg-IMAP-Server
    ObjectClass : {top, protocolCfg, protocolCfgIMAP, protocolCfgIMAPServer}
    WhenChanged : 22-09-2015 20:02:07
    WhenCreated : 22-07-2015 18:54:19
    WhenChangedUTC : 22-09-2015 14:32:07
    WhenCreatedUTC : 22-07-2015 13:24:19
    OrganizationId :
    Id : ESSRV011\1
    OriginatingServer : ***.IN
    IsValid : True
    ObjectState : Unchanged

    3 node CAS and 3 node Mailbox DAG is my environment.
    Pl. help

  • #2
    Hi, Have you fix this issue? I have the same with my environment after CU10..

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