DKIMがメールキット&でヘッダーに署名する際に奇妙な問題が発生しましたMimekit、Gmailは「dkim = neutral確認する)」。ボディハッシュでDKIM署名が失敗しましたMimekit 1.10.1.0、Mailkit 1.10.2.0
私はここで何か間違っていますか?実際の受信メールが添付されているスクリーンショットとをご覧ください。
string ReturnName = "DMC12";
string FromDomain = "backtothefuture.net";
string FromEmail = "[email protected]" + FromDomain;
string FromName = "Marty McFly";
string SenderName = "Marty McFly";
string ToEmail = "[email protected]";
string MailServer = "DMC12.large.timemachine.com";
string TextBody = @"If you put your mind to it, you can accomplish anything. One other thing. If you guys ever have kids, and one of them, when he's eight years old, accidentally sets fire to the living room rug... go easy on him!";
string HtmlBody = string.Format(@"<b>如果你把你的头脑,它可以完成任何事情。 另一件事。 如果你们有孩子,其中一个,当他八岁时,不小心把火烧在客厅地毯上...去容易对他!</b>");
string Subject = "Message from Marty (1960)!";
string ToName = "George McFly";
string DKIMdomain = FromDomain;
string DKIMSigner = "btfreturns.com";
string ReturnEmail = "[email protected]" + MailServer;
string SenderEmail = "[email protected]" + MailServer;
string privatekey = System.IO.File.ReadAllText("dkim.private.key");
var client = new SmtpClient(new ProtocolLogger("smtp.txt")); // logging SMTP connections
try
{
client.Connect(MailServer, 25);
}
catch (SmtpCommandException ex)
{
Console.WriteLine("Error trying to connect: {0}", ex.Message);
Console.WriteLine("\tStatusCode: {0}", ex.StatusCode);
return;
}
catch (SmtpProtocolException ex)
{
Console.WriteLine("Protocol error while trying to connect: {0}", ex.Message);
return;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return;
}
client.LocalDomain = MailServer;
var message = new MimeMessage();
MailboxAddress RecepientAddress = new MailboxAddress(ToName, ToEmail);
message.From.Add(new MailboxAddress(FromName, FromEmail)); // From Address
var builder = new BodyBuilder();
builder.TextBody = TextBody;
builder.HtmlBody = HtmlBody;
List<MailboxAddress> To = new List<MailboxAddress>();
To.Add(RecepientAddress);
message.Subject = Subject;
message.Body = builder.ToMessageBody();
message.Sender = new MailboxAddress(SenderName, SenderEmail); // Sender Address
message.To.Add(RecepientAddress);
message.MessageId = Guid.NewGuid().ToString("N") + "@" + new System.Net.Mail.MailAddress(message.Sender.Address).Host;
using (Stream s = (new MemoryStream(Encoding.UTF8.GetBytes(privatekey ?? ""))))
{
var headersToSign = new[] { HeaderId.From, HeaderId.To, HeaderId.Subject, HeaderId.Date, HeaderId.MessageId };
var signer = new DkimSigner(s, DKIMdomain, DKIMSigner);
signer.SignatureAlgorithm = DkimSignatureAlgorithm.RsaSha1;
message.Sign(signer, headersToSign, DkimCanonicalizationAlgorithm.Relaxed, DkimCanonicalizationAlgorithm.Relaxed);
}
client.Send(message, new MailboxAddress(ReturnName, ReturnEmail), To);
client.Disconnect(true);
client.Connect(MailServer, 25);
client.Dispose();
私は、ここの問題が何であるか知っていると思います。私がHtmlBodyでUtf-8文字を使用しているという事実は、DKIMの署名が失敗する原因になります。標準のAsciiチャッカーに置き換えれば、うまく動作し、飛行色でテストに合格します。 – Krylor