Latest eMclient and connection with Kerio Connect (latest) reports error after trying to send e-mail with attachements (2.5 megabyte images files). Error is not going away. Only solution to get rid of error box is delete the mail account, close eMClient en reconfigure the mailbox.
Error popup:
16:38:52 MailClient.Storage.Application.OperationException: Sending email failed due to the following error: ErrorUnsupportedPropertyDefinition —> Microsoft.Exchange.WebServices.Data.ServiceResponseException: ErrorUnsupportedPropertyDefinition
16:38:52 at Microsoft.Exchange.WebServices.Data.ServiceResponse.InternalThrowIfNecessary()
16:38:52 at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest1.Execute() 16:38:52 at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems[TItem](IEnumerable1 parentFolderIds, SearchFilter searchFilter, String queryString, ViewBase view, Grouping groupBy, ServiceErrorHandling errorHandlingMode)
16:38:52 at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems(FolderId parentFolderId, SearchFilter searchFilter, ViewBase view)
16:38:52 at MailClient.Protocols.Exchange.ExchangeMailSynchronizer.<>c__DisplayClass19_0.b__0(WorkerStatus status, CancellationToken cancellationToken)
16:38:52 at MailClient.Protocols.Exchange.ExchangeGenericCommand.Execute(WorkerStatus status)
16:38:52 — End of inner exception stack trace —
16:39:51 MailClient.Storage.Application.OperationException: Sending email failed due to the following error: ErrorUnsupportedPropertyDefinition —> Microsoft.Exchange.WebServices.Data.ServiceResponseException: ErrorUnsupportedPropertyDefinition
16:39:51 at Microsoft.Exchange.WebServices.Data.ServiceResponse.InternalThrowIfNecessary()
16:39:51 at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest1.Execute()<br alt="" name="" rel="" target="" title="" type="" value="">16:39:51 at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems[TItem](IEnumerable1 parentFolderIds, SearchFilter searchFilter, String queryString, ViewBase view, Grouping groupBy, ServiceErrorHandling errorHandlingMode)
16:39:51 at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems(FolderId parentFolderId, SearchFilter searchFilter, ViewBase view)
16:39:51 at MailClient.Protocols.Exchange.ExchangeMailSynchronizer.<>c__DisplayClass19_0.b__0(WorkerStatus status, CancellationToken cancellationToken)
16:39:51 at MailClient.Protocols.Exchange.ExchangeGenericCommand.Execute(WorkerStatus status)
16:39:51 — End of inner exception stack trace —