我正在使用Microsoft.Exchange.WebServices.Data连接到Office 365 Outlook并提取电子邮件及其附件。在本地开发机器上,这项工作是正确的。但是当我将其移到服务器上时,它无法运行并显示以下错误消息。
Error: 0 : Exception occurred: The request failed. The underlying connection was closed: An unexpected error occurred on a receive. at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request)
at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.ValidateAndEmitRequest(IEwsHttpWebRequest& request)
at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest`1.Execute()
at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems(FolderId parentFolderId, String queryString, ViewBase view)
防火墙已经为outlook.office365.com的完全合格域名从服务器打开了。以下是网络捕获,虽然有成功的确认,但似乎仍然失败了。请告诉我可能是什么原因导致此问题。谢谢。