private MimeMessage CreateMailMessage(MailMessage notification)
{
var message = new MimeMessage {
Subject = notification.Subject
};
var builder = new BodyBuilder();
if (!String.IsNullOrEmpty(notification.To))
{
message.To.AddRange(InternetAddressList.Parse(notification.To));
}
if (!String.IsNullOrEmpty(notification.From))
{
message.From.AddRange(InternetAddressList.Parse(notification.From));
}
else
{
message.From.AddRange(InternetAddressList.Parse(_emailOptions.SmtpFrom));
}
if (!String.IsNullOrEmpty(notification.Body))
{
builder.HtmlBody = notification.Body;
}
message.Body = builder.ToMessageBody();
return(message);
}
public Task SendAsync(MailMessage model) {
_recentMessages.Enqueue(model);
Interlocked.Increment(ref _totalSent);
while (_recentMessages.Count > _messagesToStore)
_recentMessages.Dequeue();
return Task.CompletedTask;
}
public Task SendAsync(MailMessage model) {
_recentMessages.Enqueue(model);
Interlocked.Increment(ref _totalSent);
_waitHandle.Set();
while (_recentMessages.Count > _messagesToStore)
_recentMessages.Dequeue();
return Task.FromResult(0);
}
public async Task SendAsync(MailMessage model)
{
_logger.LogTrace("Creating Mail Message from model");
var message = CreateMailMessage(model);
message.Headers.Add("X-Mailer-Machine", Environment.MachineName);
message.Headers.Add("X-Mailer-Date", SystemClock.UtcNow.ToString());
message.Headers.Add("X-Auto-Response-Suppress", "All");
message.Headers.Add("Auto-Submitted", "auto-generated");
using (var client = new SmtpClient(new ExtensionsProtocolLogger(_logger))) {
string host = _emailOptions.SmtpHost;
int port = _emailOptions.SmtpPort;
var encryption = GetSecureSocketOption(_emailOptions.SmtpEncryption);
_logger.LogTrace("Connecting to SMTP server: {SmtpHost}:{SmtpPort} using {Encryption}", host, port, encryption);
var sw = Stopwatch.StartNew();
await client.ConnectAsync(host, port, encryption).AnyContext();
_logger.LogTrace("Connected to SMTP server took {Duration:g}", sw.Elapsed);
// Note: since we don't have an OAuth2 token, disable the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
string user = _emailOptions.SmtpUser;
if (!String.IsNullOrEmpty(user))
{
_logger.LogTrace("Authenticating {SmtpUser} to SMTP server", user);
sw.Restart();
await client.AuthenticateAsync(user, _emailOptions.SmtpPassword).AnyContext();
_logger.LogTrace("Authenticated to SMTP server took {Duration:g}", user, sw.Elapsed);
}
_logger.LogTrace("Sending message: to={To} subject={Subject}", message.Subject, message.To);
sw.Restart();
await client.SendAsync(message).AnyContext();
_logger.LogTrace("Sent Message took {Duration:g}", sw.Elapsed);
sw.Restart();
await client.DisconnectAsync(true).AnyContext();
_logger.LogTrace("Disconnected from SMTP server took {Duration:g}", sw.Elapsed);
sw.Stop();
}
_lastSuccessfulConnection = SystemClock.UtcNow;
}
