DOC-7454: Document New Youtube Referrer Policy Server Configuration Setting

source/configure/experimental-configuration-settings.rst

@@ -701,6 +701,19 @@ When an alternate filestore target is configured, Mattermost Cloud admins can ge
 | This feature's ``config.json`` setting is ``"ExperimentalSettings.DedicatedExportStore": false`` with options ``true`` and ``false``.     |
 +-------------------------------------------------------------------------------------------------------------------------------------------+
 
+YouTube referrer policy
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This setting resolves issues where YouTube video previews display as unavailable.
+
+**True**: The referrer policy for embedded YouTube videos is set to ``strict-origin-when-cross-origin``.
+
+**False**: (Default) The referrer policy is set to ``no-referrer`` which enhances user privacy by not disclosing the source URL, but limits the ability to track user engagement and traffic sources in analytics tools.
+
++-------------------------------------------------------------------------------------------------------------------------------------------+
+| This feature's ``config.json`` setting is ``"ExperimentalSettings.YoutubeReferrerPolicy": false`` with options ``true`` and ``false``.    |
++-------------------------------------------------------------------------------------------------------------------------------------------+
+
 ----
 
 Experimental Bleve configuration settings

source/manage/telemetry.rst

@@ -89,7 +89,7 @@ Server Configuration Settings
 
   **Type values (enumerated integer and enumerated boolean)**
 
-  **ServiceSettings**: enum WebserverMode, bool EnableSecurityFixAlert, bool EnableInsecureOutgoingConnections, bool EnableIncomingWebhooks, bool EnableOutgoingWebhooks, bool EnableCommands, bool EnableDeveloper, bool EnableOnlyAdminIntegrations, bool EnablePostUsernameOverride, bool EnablePostIconOverride, bool EnableCustomEmoji, enum RestrictCustomEmojiCreation, bool EnableTesting, bool DeveloperFlags, bool EnableClientPerformanceDebugging, bool EnableMultifactorAuthentication, bool EnableOAuthServiceProvider, enum OutgoingIntegrationRequestsDefaultTimeout, enum ConnectionSecurity, bool UseLetsEncrypt, bool Forward80To443, enum ConnectionSecurity, bool TLSStrictTransport, bool EnforceMultifactorAuthentication, bool EnableUserTypingMessages, bool TimeBetweenUserTypingUpdatesMilliseconds, bool EnablePostSearch, bool EnableUserStatuses, bool EnableChannelViewMessages, bool EnableEmojiPicker, bool EnableGifPicker, bool EnableAuthenticationTransfer, enum TeammateNameDisplay, bool EnableUserAccessTokens, enum MaximumLoginAttempts, bool ExtendSessionLengthWithActivity, enum SessionLengthWebInHours, enum SessionLengthMobileInHours, enum SessionLengthSSOInHours, int SessionCacheInMinutes, enum SessionIdleTimeoutInMinutes, enum TimeBetweenUserTypingUpdatesMilliseconds, enum ClusterLogTimeoutMilliseconds, bool CloseUnusedDirectMessages, bool EnablePreviewFeatures, bool EnableTutorial, bool EnableOnboarding, bool ExperimentalEnableDefaultChannelLeaveJoinMessages, bool ExperimentalGroupUnreadChannels, bool AllowCookiesForSubdomains, bool EnableAPITeamDeletion, bool EnableAPITriggerAdminNotifications, bool EnableAPIUserDeletion, bool EnableAPIChannelDeletion, bool ExperimentalEnableHardenedMode, bool DisableLegacyMFA, bool ExperimentalStrictCSRFEnforcement, bool EnableEmailInvitations, bool ExperimentalChannelOrganization, bool EnableLegacySidebar, bool CorsAllowCredentials, bool CorsDebug, bool DisableBotsWhenOwnerIsDeactivated, bool EnableBotAccountCreation, bool RestrictLinkPreviews, bool EnablePermalinkPreviews, bool EnableSVGs, bool EnableLatex, bool EnableInlineLatex, bool EnableOpenTracing, bool Directory, bool RetentionDays, bool EnableLocalMode; **TeamSettings**: bool EnableUserCreation, bool EnableTeamCreation, bool RestrictTeamNames, bool EnableOpenServer, bool EnableUserDeactivation, bool EnableCustomBrand, bool RestrictDirectMessage, enum MaxNotificationsPerChannel, bool EnableConfirmNotificationsToChannel; enum MaxUsersPerTeam, enum MaxChannelsPerTeam, bool EnableJoinLeaveMessageByDefault, bool EnableCustomUserStatuses, bool EnableLastActiveTime, bool RefreshPostStatsRunTime, bool ExperimentalTownSquareIsReadOnly, bool ExperimentalHideTownSquareinLHS, bool EnableXToLeaveChannelsFromLHS, bool ExperimentalEnableAutomaticReplies, bool ExperimentalViewArchivedChannels, bool LockTeammateNameDisplay, bool MaxFieldSize; **ClientRequirementSettings**: enum AndroidLatestVersion; **GuestAccountsSettings**: bool Enable, bool AllowEmailAccounts, bool EnforceMultifactorAuthentication; **SqlSettings**: enum DriverName, bool Trace, enum ConnMaxIdleTimeMilliseconds, bool ConnMaxLifetimeMilliseconds; enum MaxOpenConns, enum QueryTimeout, bool DisableDatabaseSearch; **LogSettings**: bool EnableConsole, enum ConsoleLevel, bool ConsoleJson, bool EnableFile, enum FileLevel, bool FileJson, bool EnableWebhookDebugging; **NotificationLogSettings**: bool EnableConsole, bool ConsoleLevel, bool ConsoleJson, bool EnableFile, bool FileLevel, bool FileJson **PasswordSettings**: bool Lowercase, bool Number, bool Uppercase, bool Symbol, enum MinimumLength; **FileSettings**: bool EnablePublicLink, enum DriverName, enum MaxFileSize, enum FileSettings.MaxImageResolution, enum MaxImageDecoderConcurrency, bool FileSettings.ExtractContent, bool FileSettings.ArchiveRecursion, bool AmazonS3SSL, bool AmazonS3SignV2, bool AmazonS3SSE, bool AmazonS3Trace, bool MaximumPayloadSizeBytes, bool MaximumPayloadSizeBytes, bool EnableFileAttachments, bool EnableMobileUpload, bool EnableMobileDownload; **EmailSettings**: bool EnableSignUpWithEmail, bool EnableSignInWithEmail, bool EnableSignInWithUsername, bool RequireEmailVerification, bool SendEmailNotifications, bool UseChannelInEmailNotifications, bool EmailNotificationContentsType, bool EnableSMTPAuth, enum ConnectionSecurity, bool SendPushNotifications, enum PushNotificationContents, bool EnableEmailBatching, bool SkipServerCertificateVerification, enum EmailBatchingBufferSize, enum EmailBatchingInterval, bool EnablePreviewModeBanner, enum SMTPServerTimeout; **MessageExportSettings**: bool DownloadExportResults; **RateLimitSettings**: bool EnableRateLimiter, bool VaryByRemoteAddr,  bool VaryByUser, enum PerSec, enum MaxBurst, enum MemoryStoreSize; **PrivacySettings**: bool ShowEmailAddress, bool ShowFullName; **ThemeSettings**: bool EnableThemeSelection, bool AllowCustomThemes; **GitLabSettings**: bool Enable; **GoogleSettings**: bool Enable; **Office365Settings**: bool Enable; **SupportSettings**: bool CustomTermsOfServiceEnabled; enum CustomTermsOfServiceReAcceptancePeriod; **LdapSettings**: bool Enable, bool EnableSync, enum ConnectionSecurity, bool SkipCertificateVerification, enum SyncIntervalMinutes, enum QueryTimeout, enum MaxPageSize, bool EnableAdminFilter; **ComplianceSettings**: bool Enable, bool EnableDaily; **LocalizationSettings**: enum DefaultServerLocale, enum DefaultClientLocale, enum AvailableLocales; **SamlSettings**: bool Enable, bool EnableSyncWithLdap, bool IgnoreGuestsLdapSync, bool EnableSyncWithLdapIncludeAuth, bool Verify, bool Encrypt, bool SignRequest, bool EnableAdminFilter; **ClusterSettings**: bool Enable, bool UseIpAddress, bool ReadOnlyConfig, bool EnableExperimentalGossipEncryption, bool EnableGossipCompression; **MetricsSettings**: bool Enable, bool EnableClientMetrics, bool EnableNotificationMetrics, enum BlockProfileRate; **WebrtcSettings** (only in v5.5 and earlier): bool Enable; **ExperimentalSettings** bool ClientSideCertEnable, bool EnablePostMetadata, bool LinkMetadataTimeoutMilliseconds, bool EnableClickToReply, bool RestrictSystemAdmin, bool CloudBilling, bool RemoteClusters, bool EnableSharedChannels, bool EnableRemoteClusterService, bool Disableappbar, bool AllowSyncedDrafts; **AnnouncementSettings**: bool EnableBanner, bool AllowBannerDismissal, bool AdminNoticesEnabled, bool UserNoticesEnabled; **ElasticsearchSettings**: bool EnableIndexing, bool EnableSearching, bool Sniff, enum PostIndexReplicas, enum PostIndexShards, enum LiveIndexingBatchSize, enum BatchSize, bool SkipTLSVerification, bool Trace; **PluginSettings**: bool Enable, bool EnableUploads, bool EnableHealthCheck, bool EnableMarketplace, bool EnableRemoteMarketplace, bool AutomaticPrepackagedPlugins, bool RequirePluginSignature; **DataRetentionSettings**: bool EnableMessageDeletion, bool MessageRetentionDays, bool AllowInsecureDownloadUrl, bool EnableFileDeletion, bool FileRetentionDays, enum DeletionJobStartTime; **MessageExportSettings**: bool EnableExport, enum ExportFormat, enum DailyRunTime, enum ExportFromTimestamp, enum BatchSize, enum GlobalRelaySettings.CustomerType; **ExperimentalAuditSettings**: bool SysLogEnabled, bool SysLogInsecure, enum SysLogMaxQueueSize, bool FileEnabled, enum FileMaxSizeMB, enum FileMaxAgeDays, bool FileMaxBackups, bool FileCompress, enum FileMaxQueueSize; **BleveSettings**: bool EnableIndexing, bool EnableSearching, bool EnableAutocomplete, enum BatchSize; bool FeatureFlags
+  **ServiceSettings**: enum WebserverMode, bool EnableSecurityFixAlert, bool EnableInsecureOutgoingConnections, bool EnableIncomingWebhooks, bool EnableOutgoingWebhooks, bool EnableCommands, bool EnableDeveloper, bool EnableOnlyAdminIntegrations, bool EnablePostUsernameOverride, bool EnablePostIconOverride, bool EnableCustomEmoji, enum RestrictCustomEmojiCreation, bool EnableTesting, bool DeveloperFlags, bool EnableClientPerformanceDebugging, bool EnableMultifactorAuthentication, bool EnableOAuthServiceProvider, enum OutgoingIntegrationRequestsDefaultTimeout, enum ConnectionSecurity, bool UseLetsEncrypt, bool Forward80To443, enum ConnectionSecurity, bool TLSStrictTransport, bool EnforceMultifactorAuthentication, bool EnableUserTypingMessages, bool TimeBetweenUserTypingUpdatesMilliseconds, bool EnablePostSearch, bool EnableUserStatuses, bool EnableChannelViewMessages, bool EnableEmojiPicker, bool EnableGifPicker, bool EnableAuthenticationTransfer, enum TeammateNameDisplay, bool EnableUserAccessTokens, enum MaximumLoginAttempts, bool ExtendSessionLengthWithActivity, enum SessionLengthWebInHours, enum SessionLengthMobileInHours, enum SessionLengthSSOInHours, int SessionCacheInMinutes, enum SessionIdleTimeoutInMinutes, enum TimeBetweenUserTypingUpdatesMilliseconds, enum ClusterLogTimeoutMilliseconds, bool CloseUnusedDirectMessages, bool EnablePreviewFeatures, bool EnableTutorial, bool EnableOnboarding, bool ExperimentalEnableDefaultChannelLeaveJoinMessages, bool ExperimentalGroupUnreadChannels, bool AllowCookiesForSubdomains, bool EnableAPITeamDeletion, bool EnableAPITriggerAdminNotifications, bool EnableAPIUserDeletion, bool EnableAPIChannelDeletion, bool ExperimentalEnableHardenedMode, bool DisableLegacyMFA, bool ExperimentalStrictCSRFEnforcement, bool EnableEmailInvitations, bool ExperimentalChannelOrganization, bool EnableLegacySidebar, bool CorsAllowCredentials, bool CorsDebug, bool DisableBotsWhenOwnerIsDeactivated, bool EnableBotAccountCreation, bool RestrictLinkPreviews, bool EnablePermalinkPreviews, bool EnableSVGs, bool EnableLatex, bool EnableInlineLatex, bool EnableOpenTracing, bool Directory, bool RetentionDays, bool EnableLocalMode; **TeamSettings**: bool EnableUserCreation, bool EnableTeamCreation, bool RestrictTeamNames, bool EnableOpenServer, bool EnableUserDeactivation, bool EnableCustomBrand, bool RestrictDirectMessage, enum MaxNotificationsPerChannel, bool EnableConfirmNotificationsToChannel; enum MaxUsersPerTeam, enum MaxChannelsPerTeam, bool EnableJoinLeaveMessageByDefault, bool EnableCustomUserStatuses, bool EnableLastActiveTime, bool RefreshPostStatsRunTime, bool ExperimentalTownSquareIsReadOnly, bool ExperimentalHideTownSquareinLHS, bool EnableXToLeaveChannelsFromLHS, bool ExperimentalEnableAutomaticReplies, bool ExperimentalViewArchivedChannels, bool LockTeammateNameDisplay, bool MaxFieldSize; **ClientRequirementSettings**: enum AndroidLatestVersion; **GuestAccountsSettings**: bool Enable, bool AllowEmailAccounts, bool EnforceMultifactorAuthentication; **SqlSettings**: enum DriverName, bool Trace, enum ConnMaxIdleTimeMilliseconds, bool ConnMaxLifetimeMilliseconds; enum MaxOpenConns, enum QueryTimeout, bool DisableDatabaseSearch; **LogSettings**: bool EnableConsole, enum ConsoleLevel, bool ConsoleJson, bool EnableFile, enum FileLevel, bool FileJson, bool EnableWebhookDebugging; **NotificationLogSettings**: bool EnableConsole, bool ConsoleLevel, bool ConsoleJson, bool EnableFile, bool FileLevel, bool FileJson **PasswordSettings**: bool Lowercase, bool Number, bool Uppercase, bool Symbol, enum MinimumLength; **FileSettings**: bool EnablePublicLink, enum DriverName, enum MaxFileSize, enum FileSettings.MaxImageResolution, enum MaxImageDecoderConcurrency, bool FileSettings.ExtractContent, bool FileSettings.ArchiveRecursion, bool AmazonS3SSL, bool AmazonS3SignV2, bool AmazonS3SSE, bool AmazonS3Trace, bool MaximumPayloadSizeBytes, bool MaximumPayloadSizeBytes, bool EnableFileAttachments, bool EnableMobileUpload, bool EnableMobileDownload; **EmailSettings**: bool EnableSignUpWithEmail, bool EnableSignInWithEmail, bool EnableSignInWithUsername, bool RequireEmailVerification, bool SendEmailNotifications, bool UseChannelInEmailNotifications, bool EmailNotificationContentsType, bool EnableSMTPAuth, enum ConnectionSecurity, bool SendPushNotifications, enum PushNotificationContents, bool EnableEmailBatching, bool SkipServerCertificateVerification, enum EmailBatchingBufferSize, enum EmailBatchingInterval, bool EnablePreviewModeBanner, enum SMTPServerTimeout; **MessageExportSettings**: bool DownloadExportResults; **RateLimitSettings**: bool EnableRateLimiter, bool VaryByRemoteAddr,  bool VaryByUser, enum PerSec, enum MaxBurst, enum MemoryStoreSize; **PrivacySettings**: bool ShowEmailAddress, bool ShowFullName; **ThemeSettings**: bool EnableThemeSelection, bool AllowCustomThemes; **GitLabSettings**: bool Enable; **GoogleSettings**: bool Enable; **Office365Settings**: bool Enable; **SupportSettings**: bool CustomTermsOfServiceEnabled; enum CustomTermsOfServiceReAcceptancePeriod; **LdapSettings**: bool Enable, bool EnableSync, enum ConnectionSecurity, bool SkipCertificateVerification, enum SyncIntervalMinutes, enum QueryTimeout, enum MaxPageSize, bool EnableAdminFilter; **ComplianceSettings**: bool Enable, bool EnableDaily; **LocalizationSettings**: enum DefaultServerLocale, enum DefaultClientLocale, enum AvailableLocales; **SamlSettings**: bool Enable, bool EnableSyncWithLdap, bool IgnoreGuestsLdapSync, bool EnableSyncWithLdapIncludeAuth, bool Verify, bool Encrypt, bool SignRequest, bool EnableAdminFilter; **ClusterSettings**: bool Enable, bool UseIpAddress, bool ReadOnlyConfig, bool EnableExperimentalGossipEncryption, bool EnableGossipCompression; **MetricsSettings**: bool Enable, bool EnableClientMetrics, bool EnableNotificationMetrics, enum BlockProfileRate; **WebrtcSettings** (only in v5.5 and earlier): bool Enable; **ExperimentalSettings** bool ClientSideCertEnable, bool EnablePostMetadata, bool LinkMetadataTimeoutMilliseconds, bool EnableClickToReply, bool RestrictSystemAdmin, bool CloudBilling, bool RemoteClusters, bool EnableSharedChannels, bool EnableRemoteClusterService, bool Disableappbar, bool AllowSyncedDrafts, bool YoutubeReferrerPolicy; **AnnouncementSettings**: bool EnableBanner, bool AllowBannerDismissal, bool AdminNoticesEnabled, bool UserNoticesEnabled; **ElasticsearchSettings**: bool EnableIndexing, bool EnableSearching, bool Sniff, enum PostIndexReplicas, enum PostIndexShards, enum LiveIndexingBatchSize, enum BatchSize, bool SkipTLSVerification, bool Trace; **PluginSettings**: bool Enable, bool EnableUploads, bool EnableHealthCheck, bool EnableMarketplace, bool EnableRemoteMarketplace, bool AutomaticPrepackagedPlugins, bool RequirePluginSignature; **DataRetentionSettings**: bool EnableMessageDeletion, bool MessageRetentionDays, bool AllowInsecureDownloadUrl, bool EnableFileDeletion, bool FileRetentionDays, enum DeletionJobStartTime; **MessageExportSettings**: bool EnableExport, enum ExportFormat, enum DailyRunTime, enum ExportFromTimestamp, enum BatchSize, enum GlobalRelaySettings.CustomerType; **ExperimentalAuditSettings**: bool SysLogEnabled, bool SysLogInsecure, enum SysLogMaxQueueSize, bool FileEnabled, enum FileMaxSizeMB, enum FileMaxAgeDays, bool FileMaxBackups, bool FileCompress, enum FileMaxQueueSize; **BleveSettings**: bool EnableIndexing, bool EnableSearching, bool EnableAutocomplete, enum BatchSize; bool FeatureFlags
 
   **Counts (integer)**