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 put