/// <summary>
/// Saves the Message received by the SMTP
/// </summary>
/// <param name="context">The context information</param>
/// <param name="transaction">The transaction</param>
/// <param name="cancellationToken">The cancellation token</param>
/// <returns></returns>
public override Task <SmtpServer.Protocol.SmtpResponse> SaveAsync(ISessionContext context, IMessageTransaction transaction, CancellationToken cancellationToken)
{
// The Routable Message
RoutableMessage routableMessage = new RoutableMessage();
routableMessage.CreationDateTime = DateTime.Now;
try
{
// Retrieve the Mail From
routableMessage.MailFrom = new MailboxAddress(string.Format("{0}@{1}",
transaction.From.User,
transaction.From.Host));
// Retrieve the Mail To
foreach (var mailTo in transaction.To)
{
routableMessage.Recipients.Add(new MailboxAddress($"{mailTo.User}@{mailTo.Host}"));
}
// Gets the Message Contents and parse it to a MimeMessage
var textMessage = (ITextMessage)transaction.Message;
routableMessage.Message = MimeKit.MimeMessage.Load(textMessage.Content);
// Retrieve information for the ReceivedBy header
var sourceIpAddress = ((IPEndPoint)context.RemoteEndPoint).Address.ToString();
var machineIpAddress = GetLocalIP();
var machineHostName = System.Net.Dns.GetHostName();
var receiveByString = string.Format("from [{0}] ({0}) by {1} ({2}) with Smtp Router Service; {3}",
sourceIpAddress,
machineHostName,
machineIpAddress,
DateTime.Now.ToString("ddd, dd MMM yyy HH:mm:ss %K"));
// Append Received-By to the MimeMessage Header
routableMessage.Message.Headers.Add("X-SM-Received", receiveByString);
// Set the IP Address
routableMessage.IPAddress = sourceIpAddress;
// Trigger Event to inform a message was received
MessageReceived?.Invoke(this, new MessageEventArgs(routableMessage));
}
catch (Exception e)
{
// Notify listener
MessageReceivedWithErrors?.Invoke(this, new MessageErrorEventArgs(routableMessage, e));
// Something failed
return(Task.FromResult(SmtpServer.Protocol.SmtpResponse.TransactionFailed));
}
// Transaction was processed successfully
return(Task.FromResult(SmtpServer.Protocol.SmtpResponse.Ok));
}
private void SmtpMessageStore_MessageReceivedWithErrors(object sender, MessageErrorEventArgs e)
{
// Trigger the MessageReceivedWithErrors for the Listener
MessageReceivedWithErrors?.Invoke(sender, e);
}
