Code:
[zimbra@zimbra ~]$ zmprov ga michael@glatter-goetz.de
# name michael@glatter-goetz.de
cn: michael
displayName: Michael Glatter-Götz
givenName: Michael
mail: michael@glatter-goetz.de
mail: michaelg.g@glatter-goetz.de
objectClass: organizationalPerson
objectClass: zimbraAccount
objectClass: amavisAccount
sn: Glatter-Götz
uid: michael
userPassword: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxxxxxz/A
zimbraAccountStatus: active
zimbraAdminAuthTokenLifetime: 12h
zimbraAttachmentsBlocked: FALSE
zimbraAttachmentsIndexingEnabled: TRUE
zimbraAttachmentsViewInHtmlOnly: FALSE
zimbraAuthTokenLifetime: 4h
zimbraCOSId: e00428a1-0c00-11d9-836a-000d93afea2a
zimbraContactMaxNumEntries: 0
zimbraFeatureAdvancedSearchEnabled: TRUE
zimbraFeatureCalendarEnabled: TRUE
zimbraFeatureChangePasswordEnabled: TRUE
zimbraFeatureContactsEnabled: TRUE
zimbraFeatureConversationsEnabled: TRUE
zimbraFeatureFiltersEnabled: TRUE
zimbraFeatureGalEnabled: TRUE
zimbraFeatureHtmlComposeEnabled: TRUE
zimbraFeatureInitialSearchPreferenceEnabled: TRUE
zimbraFeatureSavedSearchesEnabled: TRUE
zimbraFeatureTaggingEnabled: TRUE
zimbraId: 3469abe4-5b76-11da-b235-3bfc4af89311
zimbraImapEnabled: TRUE
zimbraLastLogonTimestamp: 20051206205545Z
zimbraMailAlias: michaelg.g@glatter-goetz.de
zimbraMailDeliveryAddress: michael@glatter-goetz.de
zimbraMailHost: zimbra.glatter-goetz.de
zimbraMailIdleSessionTimeout: 0
zimbraMailMessageLifetime: 0
zimbraMailMinPollingInterval: 2m
zimbraMailQuota: 0
zimbraMailSpamLifetime: 30d
zimbraMailStatus: enabled
zimbraMailTransport: lmtp:zimbra.glatter-goetz.de:7025
zimbraMailTrashLifetime: 30d
zimbraNewMailNotificationBody: New message received at ${RECIPIENT_ADDRESS}.${NEWLINE}Sender: ${SENDER_ADDRESS}${NEWLINE}Subject: ${SUBJECT}
zimbraNewMailNotificationFrom: Postmaster <postmaster@${RECIPIENT_DOMAIN}>
zimbraNewMailNotificationSubject: New message received at ${RECIPIENT_ADDRESS}
zimbraPasswordEnforceHistory: 0
zimbraPasswordLocked: FALSE
zimbraPasswordMaxAge: 0
zimbraPasswordMaxLength: 64
zimbraPasswordMinAge: 0
zimbraPasswordMinLength: 6
zimbraPasswordModifiedTime: 20051122181044Z
zimbraPop3Enabled: TRUE
zimbraPrefAutoAddAddressEnabled: FALSE
zimbraPrefCalendarAlwaysShowMiniCal: TRUE
zimbraPrefCalendarFirstDayOfWeek: 1
zimbraPrefCalendarInitialView: week
zimbraPrefCalendarNotifyDelegatedChanges: FALSE
zimbraPrefCalendarUseQuickAdd: TRUE
zimbraPrefComposeFormat: text
zimbraPrefComposeInNewWindow: FALSE
zimbraPrefContactsInitialView: list
zimbraPrefContactsPerPage: 100
zimbraPrefDedupeMessagesSentToSelf: dedupeNone
zimbraPrefForwardIncludeOriginalText: includeBody
zimbraPrefForwardReplyInOriginalFormat: FALSE
zimbraPrefForwardReplyPrefixChar: >
zimbraPrefGroupMailBy: conversation
zimbraPrefHtmlEditorDefaultFontColor: #000000
zimbraPrefHtmlEditorDefaultFontFamily: Arial
zimbraPrefHtmlEditorDefaultFontSize: 12pt
zimbraPrefImapSearchFoldersEnabled: TRUE
zimbraPrefIncludeSpamInSearch: FALSE
zimbraPrefIncludeTrashInSearch: FALSE
zimbraPrefMailInitialSearch: in:inbox
zimbraPrefMailItemsPerPage: 100
zimbraPrefMailPollingInterval: 5m
zimbraPrefMailSignatureStyle: outlook
zimbraPrefMessageViewHtmlPreferred: TRUE
zimbraPrefReplyIncludeOriginalText: includeBody
zimbraPrefSaveToSent: TRUE
zimbraPrefSentMailFolder: sent
zimbraPrefShowFragments: FALSE
zimbraPrefShowSearchString: FALSE
zimbraPrefTimeZoneId: (GMT+01.00) Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
zimbraPrefUseKeyboardShortcuts: FALSE
zimbraPrefUseTimeZoneListInCalendar: FALSE Maybe the german umlaut in my name (ö) is the problem?