I did a mistake some time ago, during upgrade of secondary server (store+mta only server), i forgot to change name during configuration and it created a 3rd server on ldap tree.

Code:
$ zmprov gas

localhost
zimbra-archivio.xxxx.it
zimbra.xxxx.it


 zimbra@zimbra ~ ]$ zmprov gs localhost
# name localhost
cn: localhost
objectClass: zimbraServer
zimbraAdminPort: 7071
zimbraAdminURL: /zimbraAdmin
zimbraAttachmentsIndexedTextLimit: 1048576
zimbraBackupAutoGroupedInterval: 1d
zimbraBackupAutoGroupedNumGroups: 7
zimbraBackupAutoGroupedThrottled: FALSE
zimbraBackupMode: Standard
zimbraBackupReportEmailRecipients: xxxx@xxxx.com
zimbraBackupReportEmailRecipients: admin@zimbra-archivio.xxxx.it
zimbraBackupReportEmailSender: admin@zimbra-archivio.xxxx.it
zimbraBackupReportEmailSubjectPrefix: ZCS Backup Report
zimbraBackupSkipBlobs: FALSE
zimbraBackupSkipHsmBlobs: FALSE
zimbraBackupSkipSearchIndex: FALSE
zimbraBackupTarget: /opt/zimbra/backup
zimbraCalendarCalDavClearTextPasswordEnabled: TRUE
zimbraCalendarRecurrenceDailyMaxDays: 730
zimbraCalendarRecurrenceMaxInstances: 0
zimbraCalendarRecurrenceMonthlyMaxMonths: 360
zimbraCalendarRecurrenceOtherFrequencyMaxYears: 1
zimbraCalendarRecurrenceWeeklyMaxWeeks: 520
zimbraCalendarRecurrenceYearlyMaxYears: 100
zimbraClusterType: none
zimbraContactRankingTableRefreshInterval: 7d
zimbraConvertdURL: http://zimbra.xxxx.com:7047/convert
zimbraCreateTimestamp: 20091208224932Z
zimbraDatabaseSlowSqlThreshold: 2s
zimbraFileUploadMaxSize: 10485760
zimbraFreebusyPropagationRetryInterval: 1m
zimbraHsmAge: 30d
zimbraHsmPolicy: message,document:before:-43200minutes
zimbraHttpDebugHandlerEnabled: TRUE
zimbraHttpNumThreads: 250
zimbraHttpSSLNumThreads: 50
zimbraId: 1c968302-7234-4dc2-a2b8-5477312a9402
zimbraImapBindOnStartup: TRUE
zimbraImapBindPort: 143
zimbraImapCleartextLoginEnabled: TRUE
zimbraImapExposeVersionOnBanner: FALSE
zimbraImapNumThreads: 200
zimbraImapProxyBindPort: 7143
zimbraImapSSLBindOnStartup: TRUE
zimbraImapSSLBindPort: 993
zimbraImapSSLProxyBindPort: 7993
zimbraImapSSLServerEnabled: TRUE
zimbraImapSaslGssapiEnabled: FALSE
zimbraImapServerEnabled: TRUE
zimbraLmtpBindOnStartup: FALSE
zimbraLmtpBindPort: 7025
zimbraLmtpExposeVersionOnBanner: FALSE
zimbraLmtpNumThreads: 20
zimbraLmtpPermanentFailureWhenOverQuota: FALSE
zimbraLmtpServerEnabled: TRUE
zimbraLogToSyslog: FALSE
zimbraMailClearTextPasswordEnabled: TRUE
zimbraMailContentMaxSize: 10240000
zimbraMailDiskStreamingThreshold: 1048576
zimbraMailFileDescriptorBufferSize: 4096
zimbraMailFileDescriptorCacheSize: 1000
zimbraMailMode: http
zimbraMailPort: 80
zimbraMailProxyPort: 8080
zimbraMailPurgeSleepInterval: 1m
zimbraMailRedirectSetEnvelopeSender: TRUE
zimbraMailReferMode: wronghost
zimbraMailSSLPort: 443
zimbraMailSSLProxyPort: 8443
zimbraMailURL: /zimbra
zimbraMailUncompressedCacheMaxBytes: 1073741824
zimbraMailUncompressedCacheMaxFiles: 5000
zimbraMailUseDirectBuffers: FALSE
zimbraMailboxMoveSkipBlobs: FALSE
zimbraMailboxMoveSkipHsmBlobs: FALSE
zimbraMailboxMoveSkipSearchIndex: FALSE
zimbraMemcachedBindPort: 11211
zimbraMemcachedClientBinaryProtocolEnabled: FALSE
zimbraMemcachedClientExpirySeconds: 86400
zimbraMemcachedClientHashAlgorithm: KETAMA_HASH
zimbraMemcachedClientTimeoutMillis: 10000
zimbraMessageCacheSize: 2000
zimbraMtaAntiSpamLockMethod: flock
zimbraMtaAuthEnabled: TRUE
zimbraMtaAuthHost: zimbra-archivio.xxxx.it
zimbraMtaAuthTarget: TRUE
zimbraMtaAuthURL: http://zimbra-archivio.xxxx.it:80/service/soap/
zimbraMtaDnsLookupsEnabled: TRUE
zimbraMtaMyDestination: localhost
zimbraMtaMyNetworks: 127.0.0.0/8 192.168.30.0/24
zimbraMtaSaslAuthEnable: TRUE
zimbraMtaTlsAuthOnly: TRUE
zimbraMtaTlsSecurityLevel: may
zimbraNotebookFolderCacheSize: 1024
zimbraNotebookMaxCachedTemplatesPerFolder: 256
zimbraNotebookPageCacheSize: 10240
zimbraNotifyBindPort: 7035
zimbraNotifySSLBindPort: 7036
zimbraNotifySSLServerEnabled: TRUE
zimbraNotifyServerEnabled: TRUE
zimbraPop3BindOnStartup: TRUE
zimbraPop3BindPort: 110
zimbraPop3CleartextLoginEnabled: FALSE
zimbraPop3ExposeVersionOnBanner: FALSE
zimbraPop3NumThreads: 100
zimbraPop3ProxyBindPort: 7110
zimbraPop3SSLBindOnStartup: TRUE
zimbraPop3SSLBindPort: 995
zimbraPop3SSLProxyBindPort: 7995
zimbraPop3SSLServerEnabled: TRUE
zimbraPop3SaslGssapiEnabled: FALSE
zimbraPop3ServerEnabled: TRUE
zimbraRedoLogArchiveDir: redolog/archive
zimbraRedoLogCrashRecoveryLookbackSec: 10
zimbraRedoLogDeleteOnRollover: FALSE
zimbraRedoLogEnabled: TRUE
zimbraRedoLogFsyncIntervalMS: 10
zimbraRedoLogLogPath: redolog/redo.log
zimbraRedoLogRolloverFileSizeKB: 1048576
zimbraRedoLogRolloverHardMaxFileSizeKB: 4194304
zimbraRedoLogRolloverMinFileAge: 60
zimbraRemoteManagementCommand: /opt/zimbra/libexec/zmrcd
zimbraRemoteManagementPort: 22
zimbraRemoteManagementPrivateKeyPath: /opt/zimbra/.ssh/zimbra_identity
zimbraRemoteManagementUser: zimbra
zimbraReverseProxyConnectTimeout: 120000ms
zimbraReverseProxyHttpEnabled: FALSE
zimbraReverseProxyImapEnabledCapability: ACL
zimbraReverseProxyImapEnabledCapability: BINARY
zimbraReverseProxyImapEnabledCapability: CATENATE
zimbraReverseProxyImapEnabledCapability: CHILDREN
zimbraReverseProxyImapEnabledCapability: CONDSTORE
zimbraReverseProxyImapEnabledCapability: ENABLE
zimbraReverseProxyImapEnabledCapability: ESEARCH
zimbraReverseProxyImapEnabledCapability: ID
zimbraReverseProxyImapEnabledCapability: IDLE
zimbraReverseProxyImapEnabledCapability: IMAP4rev1
zimbraReverseProxyImapEnabledCapability: LIST-EXTENDED
zimbraReverseProxyImapEnabledCapability: LITERAL+
zimbraReverseProxyImapEnabledCapability: MULTIAPPEND
zimbraReverseProxyImapEnabledCapability: NAMESPACE
zimbraReverseProxyImapEnabledCapability: QRESYNC
zimbraReverseProxyImapEnabledCapability: QUOTA
zimbraReverseProxyImapEnabledCapability: RIGHTS=ektx
zimbraReverseProxyImapEnabledCapability: SASL-IR
zimbraReverseProxyImapEnabledCapability: SEARCHRES
zimbraReverseProxyImapEnabledCapability: UIDPLUS
zimbraReverseProxyImapEnabledCapability: UNSELECT
zimbraReverseProxyImapEnabledCapability: WITHIN
zimbraReverseProxyImapEnabledCapability: ESORT
zimbraReverseProxyImapEnabledCapability: I18NLEVEL=1
zimbraReverseProxyImapEnabledCapability: SORT
zimbraReverseProxyImapEnabledCapability: THREAD=ORDEREDSUBJECT
zimbraReverseProxyImapExposeVersionOnBanner: FALSE
zimbraReverseProxyImapSaslGssapiEnabled: FALSE
zimbraReverseProxyImapSaslPlainEnabled: TRUE
zimbraReverseProxyImapStartTlsMode: only
zimbraReverseProxyInactivityTimeout: 1h
zimbraReverseProxyLogLevel: info
zimbraReverseProxyLookupTarget: FALSE
zimbraReverseProxyMailEnabled: TRUE
zimbraReverseProxyPassErrors: TRUE
zimbraReverseProxyPop3EnabledCapability: EXPIRE 31 USER
zimbraReverseProxyPop3EnabledCapability: TOP
zimbraReverseProxyPop3EnabledCapability: UIDL
zimbraReverseProxyPop3EnabledCapability: USER
zimbraReverseProxyPop3EnabledCapability: XOIP
zimbraReverseProxyPop3ExposeVersionOnBanner: FALSE
zimbraReverseProxyPop3SaslGssapiEnabled: FALSE
zimbraReverseProxyPop3SaslPlainEnabled: TRUE
zimbraReverseProxyPop3StartTlsMode: only
zimbraReverseProxyRouteLookupTimeout: 15s
zimbraReverseProxyRouteLookupTimeoutCache: 60s
zimbraReverseProxyWorkerConnections: 10240
zimbraReverseProxyWorkerProcesses: 4
zimbraSSLCertificate: -----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
zimbraSSLPrivateKey: -----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----
zimbraSaslGssapiRequiresTls: FALSE
zimbraScheduledTaskNumThreads: 20
zimbraServiceEnabled: mailbox
zimbraServiceEnabled: mta
zimbraServiceEnabled: memcached
zimbraServiceEnabled: stats
zimbraServiceEnabled: snmp
zimbraServiceEnabled: spell
zimbraServiceHostname: zimbra-archivio.xxxx.it
zimbraServiceInstalled: antivirus
zimbraServiceInstalled: antispam
zimbraServiceInstalled: mailbox
zimbraServiceInstalled: memcached
zimbraServiceInstalled: mta
zimbraServiceInstalled: snmp
zimbraServiceInstalled: stats
zimbraServiceInstalled: spell
zimbraSmtpHostname: zimbra-archivio.xxxx.it
zimbraSmtpPort: 25
zimbraSmtpSendPartial: FALSE
zimbraSmtpTimeout: 60
zimbraSoapExposeVersion: FALSE
zimbraSoapRequestMaxSize: 15360000
zimbraSpellAvailableDictionary: en_US
zimbraSpellCheckURL: http://zimbra-archivio.xxxx.it:7780/aspell.php
zimbraStatThreadNamePrefix: btpool
zimbraStatThreadNamePrefix: pool
zimbraStatThreadNamePrefix: LmtpServer
zimbraStatThreadNamePrefix: ImapServer
zimbraStatThreadNamePrefix: ImapSSLServer
zimbraStatThreadNamePrefix: Pop3Server
zimbraStatThreadNamePrefix: Pop3SSLServer
zimbraStatThreadNamePrefix: ScheduledTask
zimbraStatThreadNamePrefix: Timer
zimbraStatThreadNamePrefix: AnonymousIoService
zimbraStatThreadNamePrefix: CloudRoutingReaderThread
zimbraStatThreadNamePrefix: GC
zimbraStatThreadNamePrefix: SocketAcceptor
zimbraStatThreadNamePrefix: Thread
zimbraTableMaintenanceGrowthFactor: 10
zimbraTableMaintenanceMaxRows: 1000000
zimbraTableMaintenanceMinRows: 10000
zimbraTableMaintenanceOperation: ANALYZE
zimbraVirusDefinitionsUpdateFrequency: 2h
zimbraXMPPEnabled: TRUE
can i delete localhost without any pain?
tia