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Thread: SMTP Auth not working

  1. #1
    Join Date
    Jul 2007
    Rep Power

    Default SMTP Auth not working

    I have both "Enable authentication" and "TLS authentication only" enabled on my server, but users are still able to send e-mail through smtp without a username and password.
    here's the output of "zmprov gs"

    description: E-mail Server
    objectClass: zimbraServer
    zimbraAdminPort: 7071
    zimbraAdminURL: /zimbraAdmin
    zimbraAttachmentsIndexedTextLimit: 1048576
    zimbraBackupAutoGroupedInterval: 1d
    zimbraBackupAutoGroupedNumGroups: 7
    zimbraBackupAutoGroupedThrottled: FALSE
    zimbraBackupMode: Standard
    zimbraBackupReportEmailSubjectPrefix: ZCS Backup Report
    zimbraBackupTarget: /opt/zimbra/backup
    zimbraClusterType: none
    zimbraFileUploadMaxSize: 10485760
    zimbraHsmAge: 30d
    zimbraHttpNumThreads: 250
    zimbraHttpSSLNumThreads: 50
    zimbraImapBindOnStartup: TRUE
    zimbraImapBindPort: 143
    zimbraImapCleartextLoginEnabled: TRUE
    zimbraImapNumThreads: 200
    zimbraImapProxyBindPort: 7143
    zimbraImapSSLBindOnStartup: TRUE
    zimbraImapSSLBindPort: 993
    zimbraImapSSLProxyBindPort: 7993
    zimbraImapSSLServerEnabled: TRUE
    zimbraImapSaslGssapiEnabled: FALSE
    zimbraImapServerEnabled: TRUE
    zimbraLmtpBindOnStartup: FALSE
    zimbraLmtpBindPort: 7025
    zimbraLmtpNumThreads: 20
    zimbraLogToSyslog: FALSE
    zimbraMailDiskStreamingThreshold: 1048576
    zimbraMailMode: redirect
    zimbraMailPort: 80
    zimbraMailPurgeSleepInterval: 0
    zimbraMailSSLPort: 443
    zimbraMailURL: /zimbra
    zimbraMemcachedBindPort: 11211
    zimbraMessageCacheSize: 1671168
    zimbraMtaAuthEnabled: TRUE
    zimbraMtaAuthTarget: TRUE
    zimbraMtaDnsLookupsEnabled: TRUE
    zimbraMtaMyDestination: localhost
    zimbraMtaMyNetworks: (external IP)/24 (internal IP)/24
    zimbraMtaTlsAuthOnly: TRUE
    zimbraNotebookFolderCacheSize: 1024
    zimbraNotebookMaxCachedTemplatesPerFolder: 256
    zimbraNotebookPageCacheSize: 10240
    zimbraNotifyBindPort: 7035
    zimbraNotifySSLBindPort: 7036
    zimbraNotifySSLServerEnabled: TRUE
    zimbraNotifyServerEnabled: TRUE
    zimbraPop3BindOnStartup: TRUE
    zimbraPop3BindPort: 110
    zimbraPop3CleartextLoginEnabled: FALSE
    zimbraPop3NumThreads: 100
    zimbraPop3ProxyBindPort: 7110
    zimbraPop3SSLBindOnStartup: TRUE
    zimbraPop3SSLBindPort: 995
    zimbraPop3SSLProxyBindPort: 7995
    zimbraPop3SSLServerEnabled: FALSE
    zimbraPop3SaslGssapiEnabled: FALSE
    zimbraPop3ServerEnabled: FALSE
    zimbraRedoLogArchiveDir: redolog/archive
    zimbraRedoLogDeleteOnRollover: TRUE
    zimbraRedoLogEnabled: TRUE
    zimbraRedoLogFsyncIntervalMS: 10
    zimbraRedoLogLogPath: redolog/redo.log
    zimbraRedoLogRolloverFileSizeKB: 102400
    zimbraRemoteManagementCommand: /opt/zimbra/libexec/zmrcd
    zimbraRemoteManagementPort: 22
    zimbraRemoteManagementPrivateKeyPath: /opt/zimbra/.ssh/zimbra_identity
    zimbraRemoteManagementUser: zimbra
    zimbraReverseProxyLookupTarget: TRUE
    zimbraScheduledTaskNumThreads: 20
    zimbraServiceEnabled: antivirus
    zimbraServiceEnabled: antispam
    zimbraServiceEnabled: logger
    zimbraServiceEnabled: mailbox
    zimbraServiceEnabled: mta
    zimbraServiceEnabled: stats
    zimbraServiceEnabled: snmp
    zimbraServiceEnabled: ldap
    zimbraServiceEnabled: spell
    zimbraServiceInstalled: antivirus
    zimbraServiceInstalled: antispam
    zimbraServiceInstalled: logger
    zimbraServiceInstalled: mailbox
    zimbraServiceInstalled: mta
    zimbraServiceInstalled: stats
    zimbraServiceInstalled: snmp
    zimbraServiceInstalled: ldap
    zimbraServiceInstalled: spell
    zimbraSmtpPort: 25
    zimbraSmtpSendPartial: FALSE
    zimbraSmtpTimeout: 60
    zimbraSoapRequestMaxSize: 15360000
    zimbraTableMaintenanceGrowthFactor: 10
    zimbraTableMaintenanceMaxRows: 1000000
    zimbraTableMaintenanceMinRows: 10000
    zimbraTableMaintenanceOperation: ANALYZE
    zimbraVirusDefinitionsUpdateFrequency: 2h
    zimbraXMPPEnabled: TRUE

  2. #2
    Join Date
    Nov 2005
    London, ON
    Rep Power


    This is most likely because your users are in the zimbraMTAMyNetworks. Whoever sits in those subnets are considered trusted and do not have to authenticate.

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