Ошибка OWA: тип исключения: Microsoft.Exchange.Data.Storage.StorageTransientException

Некоторые пользователи случайно получают эту ошибку в веб-почте OWA:

Request 
Url: https://xxx:443/owa/default.aspx 
User host address: xxx 

Exception 
Exception type: Microsoft.Exchange.Data.Storage.StorageTransientException 
Exception message: There was a problem accessing Active Directory. 

Call stack 
Microsoft.Exchange.Data.Storage.ExchangePrincipal.FromUserSid(ADRecipientSession recipientSession, SecurityIdentifier userSid) 
Microsoft.Exchange.Clients.Owa.Core.OwaWindowsIdentity.CreateExchangePrincipal() 
Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.GetExchangePrincipal(OwaContext owaContext, ExchangePrincipal& exchangePrincipal) 
Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.PrepareRequestWithoutSession(OwaContext owaContext, UserContextCookie userContextCookie) 
Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.InternalDispatchRequest(OwaContext owaContext) 
Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.DispatchRequest(OwaContext owaContext) 
System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) 

Inner Exception 
Exception type: Microsoft.Exchange.Data.Directory.ADTransientException 
Exception message: Could not find any available Global Catalog in forest xxx.local. 

Call stack 
Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType, ADObjectId domain, String serverName, Int32 port, NetworkCredential credential) 
Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType) 
Microsoft.Exchange.Data.Directory.ADSession.GetConnection(String preferredServer, Boolean isWriteOperation, Boolean isNotifyOperation, ADObjectId& rootId) 
Microsoft.Exchange.Data.Directory.ADSession.GetReadConnection(String preferredServer, ADObjectId& rootId) 
Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, String optionalBaseDN, ADObjectId readId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate arrayCreator) 
Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor) 
Microsoft.Exchange.Data.Directory.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties) 
Microsoft.Exchange.Data.Directory.Recipient.ADRecipientSession.FindBySid(SecurityIdentifier sId) 
Microsoft.Exchange.Data.Storage.ExchangePrincipal.FromUserSid(ADRecipientSession recipientSession, SecurityIdentifier userSid)

Также я заметил, что пользователи Outlook и Thunderbird с Exquilla иногда не могут отправлять письма, но не показывают никаких убедительных ошибок, а только сообщение об ошибке, в котором говорится, что он не может отправить.

По крайней мере, на сервере C: \ Windows \ System32 \ LogFiles \ HTTPERR с журналами IIS у меня нет ничего связанного.

Также в журналах событий у меня есть несколько журналов об этой проблеме:

Код события 2080: MSExchange ADAccess

Process MSEXCHANGEADTOPOLOGYSERVICE.EXE (PID=3028). Exchange Active Directory Provider has discovered the following servers with the following characteristics: 
 (Server name | Roles | Enabled | Reachability | Synchronized | GC capable | PDC | SACL right | Critical Data | Netlogon | OS Version) 
In-site:
xxx.xxx.local   CDG 1 6 7 1 0 1 1 7 1
 Out-of-site:

Код события 4001: почтовый ящик системного помощника MSExchange

A transient failure has occurred. The problem may resolve itself in awhile. The service will retry in 56 seconds. Diagnostic information:

Could not find any available Global Catalog in forest xxx.local.
Microsoft.Exchange.Data.Directory.ADTransientException: Could not find any available Global Catalog in forest xxx.local.
   at Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType, ADObjectId domain, String serverName, Int32 port, NetworkCredential credential)
   at Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType)
   at Microsoft.Exchange.Data.Directory.ADSession.GetConnection(String preferredServer, Boolean isWriteOperation, Boolean isNotifyOperation, ADObjectId& rootId)
   at Microsoft.Exchange.Data.Directory.ADSession.GetReadConnection(String preferredServer, ADObjectId& rootId)
   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, String optionalBaseDN, ADObjectId readId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate arrayCreator)
   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor)
   at Microsoft.Exchange.Data.Directory.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties)
   at Microsoft.Exchange.Data.Directory.Recipient.ADRecipientSession.FindByLegacyExchangeDN(String legacyExchangeDN)
   at Microsoft.Exchange.Servicelets.SystemAttendantMailbox.Servicelet.Work()

Код события 1022: Хранилище почтовых ящиков MSExchangeIS

Logon Failure on database "First Storage Group\Mailbox Database" - Windows account NT AUTHORITY\NETWORK SERVICE; mailbox /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=user1.Error: -2147221231 Client Machine: xxx Client Process: edgetransport.exe Client ProcessId: 0 Client ApplicationId: Client=HUB 
Text
Event ID 1: MSExchange Autodiscover
Unhandled Exception "Could not find any available Global Catalog in forest xxx.local."Stack Trace:    at Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType, ADObjectId domain, String serverName, Int32 port, NetworkCredential credential)   at Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType)   at Microsoft.Exchange.Data.Directory.ADSession.GetConnection(String preferredServer, Boolean isWriteOperation, Boolean isNotifyOperation, ADObjectId& rootId)   at Microsoft.Exchange.Data.Directory.ADSession.GetReadConnection(String preferredServer, ADObjectId& rootId)   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, String optionalBaseDN, ADObjectId readId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate arrayCreator)   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor)   at Microsoft.Exchange.Data.Directory.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties)   at Microsoft.Exchange.Data.Directory.Recipient.ADRecipientSession.FindBySid(SecurityIdentifier sId)   at Microsoft.Exchange.Autodiscover.Providers.Outlook.OutlookAutoDiscoverProvider..ctor(RequestData requestData)

Код события 1: автообнаружение MSExchange

Unhandled Exception "Could not find any available Global Catalog in forest xxx.local."Stack Trace:    at Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType, ADObjectId domain, String serverName, Int32 port, NetworkCredential credential)   at Microsoft.Exchange.Data.Directory.ConnectionPoolManager.GetConnection(ConnectionType connectionType)   at Microsoft.Exchange.Data.Directory.ADSession.GetConnection(String preferredServer, Boolean isWriteOperation, Boolean isNotifyOperation, ADObjectId& rootId)   at Microsoft.Exchange.Data.Directory.ADSession.GetReadConnection(String preferredServer, ADObjectId& rootId)   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, String optionalBaseDN, ADObjectId readId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate arrayCreator)   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor)   at Microsoft.Exchange.Data.Directory.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties)   at Microsoft.Exchange.Data.Directory.Recipient.ADRecipientSession.FindBySid(SecurityIdentifier sId)   at Microsoft.Exchange.Autodiscover.Providers.Outlook.OutlookAutoDiscoverProvider..ctor(RequestData requestData)

Порядок в журнале событий:

Кто угодно?