private static MessageClass GetInnerMessage(IBodyPart part)
{
var innerMessage = new MessageClass();
innerMessage.OpenObject(part.GetDecodedContentStream(), "_Stream");
return(innerMessage);
}
void IEmailStatusService.AddNotification(Stream httpStream)
{
const string method = "AddNotification";
try
{
SetHttpStatusCode(HttpStatusCode.NoContent);
// Parse top-level message.
var memoryStream = new MemoryStream();
StreamUtil.CopyStream(httpStream, memoryStream); // CDO will need random access to the stream
var rootMessage = new MessageClass();
rootMessage.OpenObject(new ReadOnlyIStream(memoryStream), "IStream");
if (rootMessage.ContentMediaType == "test/octet-stream")
{
SetHttpStatusCode(HttpStatusCode.Accepted); // just testing
return;
}
var deliveryStatusPart = GetDeliveryStatusPart(rootMessage);
if (deliveryStatusPart == null)
{
return;
}
// Analyze message/delivery-status.
var mtaMessage = GetInnerMessage(deliveryStatusPart);
var recipientMessage = GetInnerMessage(mtaMessage);
var recipientField = (string)recipientMessage.Fields["urn:schemas:mailheader:final-recipient"].Value;
if (recipientField == null)
{
#region Log
Log(Event.Warning, method, "Final-Recipient field is missing. Notofication ignored.", null, rootMessage);
#endregion
return;
}
var emailAddress = GetEmailAddress(recipientField);
if (string.IsNullOrEmpty(emailAddress))
{
#region Log
Log(Event.Warning, method, "Final-Recipient is invalid. Notification ignored.", null, rootMessage, Event.Arg("Final-Recipient", recipientField));
#endregion
return;
}
var statusField = (string)recipientMessage.Fields["urn:schemas:mailheader:status"].Value;
if (statusField == null)
{
#region Log
Log(Event.Warning, method, "Status field is missing. Notification ignored.", null, rootMessage);
#endregion
return;
}
if (GetStatusClass(statusField) != "5")
{
#region Log
Log(Event.Trace, method, "Not a permanent error. Notification ignored.", null, rootMessage, Event.Arg("Status", statusField));
#endregion
return;
}
var diagnosticField = (string)recipientMessage.Fields["urn:schemas:mailheader:diagnostic-code"].Value;
if (diagnosticField == null)
{
#region Log
Log(Event.Information, method, "Diagnostic-Code field is missing. Notification will be processed.", null, rootMessage);
#endregion
}
else
{
var replyCode = GetReplyCode(diagnosticField);
if (replyCode == null)
{
#region Log
Log(Event.Warning, method, "Unable to interpret the Diagnostic-Code field. Notification will be processed.", null, rootMessage, Event.Arg("Diagnostic-Code", diagnosticField));
#endregion
}
else if (TransientReplyCodes.Contains(replyCode.Value))
{
// Yahoo uses transient codes for permanent errors
if (!emailAddress.Contains(Yahoo))
{
#region Log
Log(Event.Information, method, "Reply code indicates transient condition. Notification ignored.", null, rootMessage, Event.Arg("Diagnostic-Code", diagnosticField));
#endregion
return;
}
}
}
// Update member record.
#region Log
Log(Event.Information, method, "Setting EmailBounced flag for the user.", null, rootMessage,
Event.Arg("emailAddress", emailAddress), Event.Arg("diagnosticField", diagnosticField));
#endregion
_emailVerificationsCommand.UnverifyEmailAddress(emailAddress, diagnosticField);
}
catch (Exception e)
{
Logger.Raise(Event.Error, method, "Unexpected exception.", e, new StandardErrorHandler());
throw;
}
}
