IMAP Problems "Bad Command. 12"

Question

Hey there,
i've got a problem with Exchange 2010 and IMAP4. The service is started successfully but it is unable to handle imap requests. When i try to test it with telnet is says by typing any command with "BAD Command Error. 12"
Here is the configuration from "Get-ImapSettings | fl":
RunspaceId                        : 49df46c8-c92d-4860-8e5d-33b212ad3044
ProtocolName                      : IMAP4
Name                              : 1
MaxCommandSize                    : 10240
ShowHiddenFoldersEnabled          : False
UnencryptedOrTLSBindings          : {0.0.0.0:143}
SSLBindings                       : {0.0.0.0:993}
InternalConnectionSettings        : {SYNCHEXCASHUB01.sync.hosting:993:SSL, SYNCHEXCASHUB01.sync.hosting:143:TLS}
ExternalConnectionSettings        : {msyncing.net:993:SSL}
X509CertificateName               : msyncing.net
Banner                            : The Microsoft Exchange IMAP4 service is ready.
LoginType                         : PlainTextLogin
AuthenticatedConnectionTimeout    : 00:30:00
PreAuthenticatedConnectionTimeout : 00:01:00
MaxConnections                    : 2147483647
MaxConnectionFromSingleIP         : 2147483647
MaxConnectionsPerUser             : 16
MessageRetrievalMimeFormat        : BestBodyFormat
ProxyTargetPort                   : 143
CalendarItemRetrievalOption       : iCalendar
OwaServerUrl                      :
EnableExactRFC822Size             : False
LiveIdBasicAuthReplacement        : False
SuppressReadReceipt               : False
ProtocolLogEnabled                : True
EnforceCertificateErrors          : False
LogFileLocation                   : E:\IMAPLOGS
LogFileRollOverSettings           : Daily
LogPerFileSizeQuota               : 0 B (0 bytes)
ExtendedProtectionPolicy          : None
EnableGSSAPIAndNTLMAuth           : True
Server                            : SYNCHEXCASHUB01
AdminDisplayName                  :
ExchangeVersion                   : 0.10 (14.0.100.0)
DistinguishedName                 : CN=1,CN=IMAP4,CN=Protocols,CN=SYNCHEXCASHUB01,CN=Servers,CN=Exchange Administrative
                                     Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=Sync Hosting,CN=Microsoft Exch
                                    ange,CN=Services,CN=Configuration,DC=sync,DC=hosting
Identity                          : SYNCHEXCASHUB01\1
Guid                              : 7005ade4-ce3e-4a95-a352-45164924fdec
ObjectCategory                    : sync.hosting/Configuration/Schema/ms-Exch-Protocol-Cfg-IMAP-Server
ObjectClass                       : {top, protocolCfg, protocolCfgIMAP, protocolCfgIMAPServer}
WhenChanged                       : 07.11.2011 16:17:51
WhenCreated                       : 19.09.2011 20:53:51
WhenChangedUTC                    : 07.11.2011 15:17:51
WhenCreatedUTC                    : 19.09.2011 18:53:51
OrganizationId                    :
OriginatingServer                 : SYNCHEXAD02.sync.hosting
IsValid                           : True
Here is the protocol log output:
#Fields: dateTime,sessionId,seqNumber,sIp,cIp,user,duration,rqsize,rpsize,command,parameters,context
2011-11-07T15:10:10.499Z,0000000000000001,0,178.250.172.237:143,93.223.147.244:50724,,-2147483648,0,53,OpenSession,,
2011-11-07T15:10:11.218Z,0000000000000002,0,10.0.7.10:993,10.0.7.10:7103,,-2147483648,0,53,OpenSession,,
2011-11-07T15:10:11.311Z,0000000000000002,1,10.0.7.10:993,10.0.7.10:7103,,62,15,135,capability,,R=ok
2011-11-07T15:10:11.358Z,0000000000000002,2,10.0.7.10:993,10.0.7.10:7103,,0,11,91,logout,,R=ok
2011-11-07T15:10:12.374Z,0000000000000001,1,178.250.172.237:143,93.223.147.244:50724,,0,4,28,InvalidCommand,HELO,"R=""HELO BAD Command Error. 12"";RpcL=-1;LdapL=-1"
2011-11-07T15:10:13.889Z,0000000000000001,2,178.250.172.237:143,93.223.147.244:50724,,0,4,28,InvalidCommand,EHLO,"R=""EHLO BAD Command Error. 12"";RpcL=-1;LdapL=-1"
2011-11-07T15:10:15.624Z,0000000000000001,3,178.250.172.237:143,93.223.147.244:50724,,0,4,57,InvalidCommand,HELP,"R=""HELP BAD Command Error. 12"
2011-11-07T15:11:32.873Z,0000000000000003,0,10.0.7.10:993,10.0.7.10:7334,,-2147483648,0,53,OpenSession,,
2011-11-07T15:11:32.888Z,0000000000000003,1,10.0.7.10:993,10.0.7.10:7334,,0,15,135,capability,,R=ok
2011-11-07T15:11:33.029Z,0000000000000003,2,10.0.7.10:993,10.0.7.10:7334,,140,50,23,login,[email protected] *****,"R=""aDIO NO LOGIN failed."";Msg=LogonFailed:LoginDenied"
2011-11-07T15:11:33.029Z,0000000000000003,3,10.0.7.10:993,10.0.7.10:7334,,0,0,0,CloseSession,,
I've already fixed this once with adding the "compliance.dll" lines that was missing from the "..exe.config" files. After applying UR 6 the error is appearing again and i don't know how to fix it this time..
please advise,
Peter

Answer 1

Hi Peter,
Can you use Outlook (via IMAP) connect to Exchange Server?
If this is the same issue as you fixed before, do you follow the old way to have a try? per my knowledge, when Exchange install the updates, the configure file will
be restore( any changed manually will be removed) .
Thanks,
Evan