Question

我们正在使用AWS SES从我们的C＃应用程序发送电子邮件。我们有一个大小为9.28MB的附件（PDF文件），当我们尝试使用附件发送电子邮件时，它会抛出以下异常：

System.Xml.XmlException: Root element is missing. at System.Xml.XmlTextReaderImpl.Throw(Exception e) at System.Xml.XmlTextReaderImpl.ParseDocumentContent() at Amazon.Runtime.Internal.Transform.UnmarshallerContext.Read() at Amazon.Runtime.Internal.Transform.ErrorResponseUnmarshaller.Unmarshall(UnmarshallerContext context) at Amazon.SimpleEmail.Model.Transform.SendRawEmailResponseUnmarshaller.UnmarshallException(UnmarshallerContext context, Exception innerException, HttpStatusCode statusCode) at Amazon.Runtime.AmazonWebServiceClient.processWebException[X,Y](String requestName, WebException we, HttpWebRequest webRequest, IResponseUnmarshaller`2 unmarshaller, IRequest`1 request, Int32 retries) at Amazon.Runtime.AmazonWebServiceClient.Invoke[X,Y](IRequest`1 request, AbstractAWSSigner signer, IResponseUnmarshaller`2 unmarshaller) at Amazon.SimpleEmail.AmazonSimpleEmailServiceClient.SendRawEmail(SendRawEmailRequest sendRawEmailRequest) at MyApp.AmazonSESWrapper.SendRawEmail(String awsAccessKey, String awsSecretKey, List`1 to, List`1 cc, List`1 bcc, String senderEmailAddress, String replyToEmailAddress, String subject, String body, String text, String filePath, String exceptionDetails)

但是当我们发送一个7.50MB的word文档作为附件时，我们得到以下异常：

Amazon.SimpleEmail.AmazonSimpleEmailServiceException: Message length is more than 10485760 bytes long: '10788624'. ---> System.Net.WebException: The remote server returned an error: (400) Bad Request. at System.Net.HttpWebRequest.GetResponse() at Amazon.Runtime.AmazonWebServiceClient.Invoke[X,Y](IRequest`1 request, AbstractAWSSigner signer, IResponseUnmarshaller`2 unmarshaller) --- End of inner exception stack trace --- at Amazon.Runtime.AmazonWebServiceClient.processWebException[X,Y](String requestName, WebException we, HttpWebRequest webRequest, IResponseUnmarshaller`2 unmarshaller, IRequest`1 request, Int32 retries) at Amazon.Runtime.AmazonWebServiceClient.Invoke[X,Y](IRequest`1 request, AbstractAWSSigner signer, IResponseUnmarshaller`2 unmarshaller) at Amazon.SimpleEmail.AmazonSimpleEmailServiceClient.SendRawEmail(SendRawEmailRequest sendRawEmailRequest) at

在论坛和常见问题解答中，它表示最大附件大小为10MB，但错误发生在少于10MB的附件中。

https://forums.aws.amazon.com/thread.jspa?messageID=346305

http://aws.amazon.com/ses/faqs/#49

请就此提出建议。

Answer 1

还有整体邮件大小限制，也是10M。根据{{3}}：

Amazon SES将接受最大10 MB的电子邮件。这个包括作为信息一部分的任何附件。

因此，您必须确保您的请求符合这些限制。

（我个人认为它是一个错误，亚马逊API抛出“XmlException：根元素丢失。”以防邮件大小超出限制。这完全是误导。）

从AWS SES发送附件小于10 MB的电子邮件

1 个答案: