C＃通過交換2K7

Question

通過Gmail SMTP而不是通過交換2K7發送時，下面的代碼工作與發送SMTP郵件。 在同一臺機器上，我有Outlook Express通過交換成功發送。 我用我的代碼相同的配置在Outlook Express中，但不斷收到錯誤：

The SMTP server requires a secure connection or the client was not authenticated. 
The server response was: 5.7.1 Client was not authenticated. 
Stack: at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response) 
    at System.Net.Mail.MailCommand.Send ... 

SSL設置爲true。

這裏是DA代碼：

//create new MailMessage 
mailmessage = new MailMessage(definition.From, definition.To); 
mailmessage.ReplyToList.Add(definition.From); 
mailmessage.IsBodyHtml = true; 
mailmessage.SubjectEncoding = System.Text.Encoding.UTF8; 
mailmessage.BodyEncoding = System.Text.Encoding.UTF8; 
mailmessage.Subject = definition.Subject; 
mailmessage.Body = definition.Body; 

mailmessage = MessageBody.CompleteMessage(mailmessage, definition); 

//send MailMessage 
//get smtpclient 
SmtpClient smtp = null; 

if (smtp == null) 
{ 
//create, init 
smtp = new SmtpClient(definition.Server, definition.Port) 
{ 
    Credentials = new NetworkCredential(definition.Uid, definition.Pwd), 
    EnableSsl = definition.Ssl, 
    DeliveryMethod = SmtpDeliveryMethod.Network 
}; 

} 
ServicePointManager.ServerCertificateValidationCallback = delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; }; 
smtp.Send(mailmessage); 

更新：當我拿出回調線並嘗試發送我得到這個錯誤：

Exception: The remote certificate is invalid according to the validation procedure.. Stack: at System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken message, AsyncProtocolRequest asyncRequest, Exception exception) 
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest) 
    at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult) 
    at System.Net.TlsStream.CallProcessAuthentication(Object state) 
    at System.Threading.ExecutionContext.runTryCode(Object userData) 
    at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) 
    at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) 
    at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) 
    at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
    at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result) 
    at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size) 
    at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size) 
    at System.Net.Mail.SmtpConnection.Flush() 
    at System.Net.Mail.ReadLinesCommand.Send(SmtpConnection conn) 
    at System.Net.Mail.EHelloCommand.Send(SmtpConnection conn, String domain) 
    at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) 
    at System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint) 
    at System.Net.Mail.SmtpClient.GetConnection() 
    at System.Net.Mail.SmtpClient.Send(MailMessage message) 

Answer 1

即興，它看起來像你一切正確。我有兩個建議是黑暗中刺，但你可能想要看得更近：

既然你得到︰The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.1 Client was not authenticated. Stack: at System.Net.Mail.MailCommand ...我將不得不假設Exchange服務器有一個問題來解釋數據包它正在接收。

1）這可能是由於SSL加密。我會仔細檢查你是否需要SSL。您可以發送（雖然不推薦）不使用SSL的用戶名和密碼。這將是一個糟糕的服務器設置，但這可能無法控制。

2）你還做了一個證書驗證回調。這是一個額外的SMTP驗證層，可能與他的SSL數據包相沖突。你可以發送沒有該行的郵件嗎？

我希望這些可以把你的方向，以真正的答案。

Answer 2

找到了一個很好的解決方案。不要嘗試使用交換2K7及以上的smtp。改爲使用EWS（Exchange Web服務）。

的步驟是：

1. 下載EWS託管API從http://www.microsoft.com/download/en/details.aspx?id=13480
2. 安裝它
3. 添加到Microsoft.Exchange.WebServices.dll引用到您的項目。你會用C發現：\程序文件（x86）\微軟\交換\ Web服務\ 1.1

4. 使用下面的示例代碼作爲參考。使用Microsoft.Exchange.WebServices.Data

   ;使用System.Security.Cryptography.X509Certificates

   ;

...

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1); 

service.Url = new Uri(@"https://"+[Your exchange computer name like: abc.domain.com]+"/EWS/Exchange.asmx"); 

//if have the ip you can get the computer name using the nslookup utility in command line. ->nslookup 192.168.0.90 

ServicePointManager.ServerCertificateValidationCallback = 
        delegate(Object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) 
        { 
         return true; 
        }; 

service.Credentials = new WebCredentials([User name: either email or domain account-but without the domain\], "password"); 

EmailMessage mailmessage = new EmailMessage(service); 

mailmessage.From="me@something.com"; 

mailmessage.ToRecipients.Add("someone@something.com"); 

mailmessage.Subject = "Hello"; 

mailmessage.Body = "World"; 

mailmessage.Body.BodyType = BodyType.HTML; //or text 

mailmessage.Send(); 

希望它可以幫助你。