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Thread: SMTP Auth not working

  1. #1
    sbriscoe2 is offline Member
    Join Date
    Jul 2007
    Posts
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    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 zimbra.mydomain.com"

    cn: zimbra.mydomain.com
    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
    zimbraMtaAuthHost: zimbra.mydomain.com
    zimbraMtaAuthTarget: TRUE
    zimbraMtaAuthURL: https://zimbra.mydomain.com/service/soap/
    zimbraMtaDnsLookupsEnabled: TRUE
    zimbraMtaMyDestination: localhost
    zimbraMtaMyNetworks: 127.0.0.0/8 (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
    zimbraServiceHostname: zimbra.mydomain.com
    zimbraServiceInstalled: antivirus
    zimbraServiceInstalled: antispam
    zimbraServiceInstalled: logger
    zimbraServiceInstalled: mailbox
    zimbraServiceInstalled: mta
    zimbraServiceInstalled: stats
    zimbraServiceInstalled: snmp
    zimbraServiceInstalled: ldap
    zimbraServiceInstalled: spell
    zimbraSmtpHostname: zimbra.mydomain.com
    zimbraSmtpPort: 25
    zimbraSmtpSendPartial: FALSE
    zimbraSmtpTimeout: 60
    zimbraSoapRequestMaxSize: 15360000
    zimbraSpellCheckURL: http://zimbra.mydomain.com:7780/aspell.php
    zimbraTableMaintenanceGrowthFactor: 10
    zimbraTableMaintenanceMaxRows: 1000000
    zimbraTableMaintenanceMinRows: 10000
    zimbraTableMaintenanceOperation: ANALYZE
    zimbraVirusDefinitionsUpdateFrequency: 2h
    zimbraXMPPEnabled: TRUE

  2. #2
    rsharpe is offline Elite Member & Volunteer
    Join Date
    Nov 2005
    Location
    London, ON
    Posts
    255
    Rep Power
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    Default

    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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