EWS reports SendItem as successful, but the message is still in the Drafts folder

Question

EWS reports SendItem as successful, but the message is still in the Drafts folder

I use the EWS Managed API to send email through exchange. When sending an element with attachments, I do CreateItem first and then SendItem . This basically works fine, but sometimes items remain in the Drafts folder, although EWS reports that SendItem succeeding. How can I tell you what's going on here?

The EWS messages that I see from the trace are CreateItem first:

  <?xml version="1.0" encoding="utf-8"?> <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Header> <t:RequestServerVersion Version="Exchange2013" /> </soap:Header> <soap:Body> <m:CreateItem MessageDisposition="SaveOnly"> <m:SavedItemFolderId> <t:DistinguishedFolderId Id="drafts"> <t:Mailbox> <t:EmailAddress> amailbox@thedomain.com </t:EmailAddress> </t:Mailbox> </t:DistinguishedFolderId> </m:SavedItemFolderId> ... </m:CreateItem> </soap:Body> </soap:Envelope> </Trace>

I get a "Success" response:

  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:CreateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:CreateItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> <m:Items> <t:Message> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> <t:Attachments> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA=" /> </t:FileAttachment> </t:Attachments> </t:Message> </m:Items> </m:CreateItemResponseMessage> </m:ResponseMessages> </m:CreateItemResponse> </s:Body> </s:Envelope> </Trace> / dBAdDByRbztYn12Cy / 4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA =" ChangeKey = "CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" />  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:CreateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:CreateItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> <m:Items> <t:Message> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> <t:Attachments> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA=" /> </t:FileAttachment> </t:Attachments> </t:Message> </m:Items> </m:CreateItemResponseMessage> </m:ResponseMessages> </m:CreateItemResponse> </s:Body> </s:Envelope> </Trace> / dBAdDByRbztYn12Cy / 4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM =" />  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:CreateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:CreateItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> <m:Items> <t:Message> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> <t:Attachments> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA=" /> </t:FileAttachment> </t:Attachments> </t:Message> </m:Items> </m:CreateItemResponseMessage> </m:ResponseMessages> </m:CreateItemResponse> </s:Body> </s:Envelope> </Trace> / dBAdDByRbztYn12Cy / 4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo =" />  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:CreateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:CreateItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> <m:Items> <t:Message> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> <t:Attachments> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA=" /> </t:FileAttachment> </t:Attachments> </t:Message> </m:Items> </m:CreateItemResponseMessage> </m:ResponseMessages> </m:CreateItemResponse> </s:Body> </s:Envelope> </Trace> / dBAdDByRbztYn12Cy / 4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ =" />  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:CreateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:CreateItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> <m:Items> <t:Message> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> <t:Attachments> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA=" /> </t:FileAttachment> </t:Attachments> </t:Message> </m:Items> </m:CreateItemResponseMessage> </m:ResponseMessages> </m:CreateItemResponse> </s:Body> </s:Envelope> </Trace> / dBAdDByRbztYn12Cy / 4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA =" />  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:CreateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:CreateItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> <m:Items> <t:Message> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> <t:Attachments> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAGiKX5lgtuFLgfIBgyg4IwM=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQADkNd4D6H0NAgxCM7uH6MGo=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAKu2RdYFlBVIiLyPxshNCZQ=" /> </t:FileAttachment> <t:FileAttachment> <t:AttachmentId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAABEgAQAJ2C2tyz2iJHm8XC9LmSkcA=" /> </t:FileAttachment> </t:Attachments> </t:Message> </m:Items> </m:CreateItemResponseMessage> </m:ResponseMessages> </m:CreateItemResponse> </s:Body> </s:Envelope> </Trace>

Then I ask you to send it and go to SentItems:

  <?xml version="1.0" encoding="utf-8"?> <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Header> <t:RequestServerVersion Version="Exchange2013" /> </soap:Header> <soap:Body> <m:SendItem SaveItemToFolder="true"> <m:ItemIds> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> </m:ItemIds> <m:SavedItemFolderId> <t:DistinguishedFolderId Id="sentitems"> <t:Mailbox> <t:EmailAddress> amailbox@thedomain.com </t:EmailAddress> </t:Mailbox> </t:DistinguishedFolderId> </m:SavedItemFolderId> </m:SendItem> </soap:Body> </soap:Envelope> </Trace> / dBAdDByRbztYn12Cy / 4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA =" ChangeKey = "CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" />  <?xml version="1.0" encoding="utf-8"?> <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Header> <t:RequestServerVersion Version="Exchange2013" /> </soap:Header> <soap:Body> <m:SendItem SaveItemToFolder="true"> <m:ItemIds> <t:ItemId Id="AAMkADExMmY0MTgzLWJmZmUtNDcxNi1iOTk0LWMzZTU3M2I3NjBkMwBGAAAAAABL/dBAdDByRbztYn12Cy/4BwCJZGY3HQ5zQpbF9WoRXD0sAAAAAAEPAACJZGY3HQ5zQpbF9WoRXD0sAAA6HNVuAAA=" ChangeKey="CQAAABYAAACJZGY3HQ5zQpbF9WoRXD0sAAA6JC4z" /> </m:ItemIds> <m:SavedItemFolderId> <t:DistinguishedFolderId Id="sentitems"> <t:Mailbox> <t:EmailAddress> amailbox@thedomain.com </t:EmailAddress> </t:Mailbox> </t:DistinguishedFolderId> </m:SavedItemFolderId> </m:SendItem> </soap:Body> </soap:Envelope> </Trace>

And I get the answer "Unanswered":

  <?xml version="1.0" encoding="utf-8"?> <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <h:ServerVersionInfo MajorVersion="15" MinorVersion="0" MajorBuildNumber="1104" MinorBuildNumber="3" Version="V2_22" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" /> </s:Header> <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <m:SendItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> <m:ResponseMessages> <m:SendItemResponseMessage ResponseClass="Success"> <m:ResponseCode>NoError</m:ResponseCode> </m:SendItemResponseMessage> </m:ResponseMessages> </m:SendItemResponse> </s:Body> </s:Envelope> </Trace>

All of them are tracked by the same managed ThreadId, so I'm sure that they all correspond to the same element.

I do not use an avatar exchange. I authenticate the username and password with credentials for the mailbox that sends the items.

EDIT (May 22):

I added the X-AnchorMailbox header to my requests and upgraded to EWS Managed API 2.2 (used 2.1, though, since the SOAP messages looked right, I don't think that was the problem). The problem is still happening.

I added code to re-receive the item after sending it to check if it is all in the Drafts folder. I do this via EmailMessage.Bind() with the identifier of the item just sent from the drafts. When I run against Exchange on Office 365, which always throws an exception because the item no longer exists, which is expected because the ItemId changes when the item moves the folder. When I start the Exchange client server, it finds the item by this identifier. Then I will try to send it and receive a ServiceResponseException message with the Access is denied. Check credentials and try again. message Access is denied. Check credentials and try again. Access is denied. Check credentials and try again. If I try to send a message to Office 365, I get a SendItemResponse message with the message The specified object was not found in the store., The process failed to get the correct properties. (SOAP message SendItemResponse with ResponseCode ErrorItemNotFound .

I raised a support request with Microsoft (with which, oddly enough, there was no answer after more than 48 hours ... maybe there is some trick to raising support requests).

EDIT (May 24)

When repeating the tests, I sometimes saw elements that remain in the drafts, but are also received by the recipient! When checking their properties> Internet headers through Outlook, they both have the same message identifier. More signs that something went wrong on the Exchange side?

EDIT (May 30)

I heard from Microsoft support who explained a little how the exchange happens in the exchange and what they think:

a Missing response from the EWS means that the message has been successfully flagged for views (PR_MESSAGE_FLAGS> MSGFLAG_SUBMIT). When the send flag is set, the mail service submission on Exchange notifies the Transport service that there are messages waiting to be received in draft copies (Outbox if Outlook). If any client reads the message after it has been marked for sending but before it has been raised by the Transport Service, the MSGFLAG_SUBMIT flag is deleted, which leads to the message being stuck in the draft folder.
To determine if this is true, you can subscribe to notifications using streaming notifications (and a tool like EWSEditor or EwsStreaming ) and check for Modified Events for any element and check for PR_MESSAGE_FLAGS changes.
As discussed, the message could be accessed by any client or API before the transport service went to pick it up, such as OWA, Outlook, EWS Managed API, Outlook add-ins, or any mobile application.

So, the following task is twofold:

Determine that something reads my messages immediately after they are marked for sending by resetting the MSGFLAG_SUBMIT flag. If so, ask them to stop.
Turn on the process to resend items that I think were sent, which I later found in drafts.

I had no information on why I tried to get Access Denied when resubmitted, but maybe this is consistent with something else modifying the element.

They did not think it was likely that this was a problem in EWS, where the EWS incorrectly reports success when in fact the message was not marked for sending. What is encouraging.

EDIT (June 20):

Presenting the process of sending items stuck in drafts does not work very well. It turns out that sometimes, when items are left in draft copies, they were actually sent and received by the recipient, so re-sending them means the recipient receives a duplicate email. Or several if the same problem recurs. Sometimes an item is not sent, but it is still deleted from the drafts and moved to the sent items - again, it is impossible for the sender to find out whether it was sent or not. It’s totally strange. I asked one more question here whether sending Exchange messages will be atomic and reliable .

Also positioned on Exchange Forums

+6

.net exchangewebservices ews-managed-api

Rory May 17 '16 at 17:44

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3 answers

Adapted from the MSDN Documentation on SendItem :

An additional scenario to consider when a delegate creates an email message and saves it in the Drafts folder of the delegate's mailbox. If a delegate tries to send an item and save a copy to the selected folder in the main sent item, the message is sent correctly, the draft message remains in the Deposit folder, the sent message does not appear in the Delegate Transfer or Basic Sent folders, and the response is successful.

The documentation seems to say that you are out of luck ... The best job might be to send and move the sent items as two separate functions.

+3

Onots May 25 '16 at 12:55

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Set the MAPI 'MessageFlags' extended property to 'Read', so the item will not be marked as Draft.

Here is the definition of an extended property:

 /// <summary> /// Definitions of Microsoft Mail API (MAPI) extended properties that you can get/set on mailbox items via EWS interface /// </summary> public static class MapiSchema { /// <summary> /// Definition of MAPI property unique identifiers /// </summary> public static class Tags { /// <summary> /// Message flags (like 'read', 'unsent'; see PR_MESSAGE_FLAGS online) /// </summary> public const int MessageFlags = 0x0E07; } /// <summary> /// Message flags (like 'read', 'unsent'; see PR_MESSAGE_FLAGS online) /// </summary> public static readonly ExtendedPropertyDefinition MessageFlags = new ExtendedPropertyDefinition(Tags.MessageFlags, MapiPropertyType.Integer); }

Here are the possible values (flags) for this property:

 /// <summary> /// Values for the PR_MESSAGE_FLAGS message property (Microsoft Message API) /// </summary> [Flags] public enum MessageFlags { /// <summary> /// No flags set /// </summary> None = 0, /// <summary> /// [MSGFLAG_READ] The message is marked as having been read. This can occur as the result of a call at any time to IMessage::SetReadFlag or IMAPIFolder::SetReadFlags. Clients can also set this flag by calling a message IMAPIProp::SetProps method before the message has been saved for the first time. This flag is ignored if the MSGFLAG_ASSOCIATED flag is set. /// </summary> Read = 1, /// <summary> /// [MSGFLAG_UNMODIFIED] The outgoing message has not been modified since the first time that it was saved; the incoming message has not been modified since it was delivered. /// </summary> Unmodified = 2, /// <summary> /// [MSGFLAG_SUBMIT] The message is marked for sending as a result of a call to IMessage::SubmitMessage. Message store providers set this flag; the client has read-only access. /// </summary> Submit = 4, /// <summary> /// [MSGFLAG_UNSENT] The message is still being composed. It is saved, but has not been sent. The client or provider has read/write access to this flag until the first IMAPIProp::SaveChanges call and read-only thereafter. If a client doesn't set this flag by the time the message is sent, the message store provider sets it when IMessage::SubmitMessage is called. Typically, this flag is cleared after the message is sent. /// </summary> Unsent = 8, /// <summary> /// [MSGFLAG_HASATTACH] The message has at least one attachment. This flag corresponds to the message PR_HASATTACH (PidTagHasAttachments) property. The client has read-only access to this flag. /// </summary> HasAttachment = 16, /// <summary> /// [MSGFLAG_FROMME] The messaging user sending was the messaging user receiving the message. The client or provider has read/write access to this flag until the first IMAPIProp::SaveChanges call and read-only thereafter. This flag is meant to be set by the transport provider. /// </summary> FromMe = 32, /// <summary> /// [MSGFLAG_ASSOCIATED] The message is an associated message of a folder. The client or provider has read-only access to this flag. The MSGFLAG_READ flag is ignored for associated messages, which do not retain a read/unread state. /// </summary> Associated = 64, /// <summary> /// [MSGFLAG_RESEND] The message includes a request for a resend operation with a nondelivery report. The client or provider has read/write access to this flag until the first IMAPIProp::SaveChanges call and read-only thereafter. /// </summary> Resend = 128, /// <summary> /// [MSGFLAG_RN_PENDING] A read report needs to be sent for the message. The client or provider has read-only access to this flag. /// </summary> ReadReportPending = 256, /// <summary> /// [MSGFLAG_NRN_PENDING] A nonread report needs to be sent for the message. The client or provider has read-only access to this flag. /// </summary> NonReadReportPending = 512, /// <summary> /// [MSGFLAG_ORIGIN_X400] The incoming message arrived over an X.400 link. It originated either outside the organization or from a source the gateway cannot consider trusted. The client should display an appropriate message to the user. Transport providers set this flag; the client has read-only access. /// </summary> OriginX400 = 4096, /// <summary> /// [MSGFLAG_ORIGIN_INTERNET] The incoming message arrived over the Internet. It originated either outside the organization or from a source the gateway cannot consider trusted. The client should display an appropriate message to the user. Transport providers set this flag; the client has read-only access. /// </summary> OriginInternet = 8192, /// <summary> /// [MSGFLAG_ORIGIN_MISC_EXT] The incoming message arrived over an external link other than X.400 or the Internet. It originated either outside the organization or from a source the gateway cannot consider trusted. The client should display an appropriate message to the user. Transport providers set this flag; the client has read-only access. /// </summary> OriginOtherExternal = 32768, }

And this is how you installed it before creating the element:

 var item = new EmailMessage(service); var messageFlags = MessageFlags.Read; item.SetExtendedProperty(MapiSchema.MessageFlags, (int)messageFlags);

Exchange is filled with errors, and I hope this solves the problem.

+1

Serge Semenov May 24 '16 at 16:35

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Rory · Accepted Answer · 2017-04-03T10:03:10+0000

I did not solve this, except to ensure, as far as possible, that no other applications interact with the mailbox at the same time as recommending MS support. We changed permissions on the mailbox to stop some people who had access to the shared mailbox and would have access to it through Outlook. This completely fixed the problem for the main client who encountered this problem. BUT, it’s still completely strange for me that EWS / exchange can be so unreliable, and I would never want to use it again, given this problem. He also does not explain cases when the message was delivered, but remained in the Drafts folder, which means that it is impossible to verify that the transfer was successful or unsuccessful.

EWS reports SendItem as successful, but the message is still in the Drafts folder

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