我正在尝试使用MailKit通过"smtp.office365.com"发送电子邮件。 这是我正在使用的代码。
using (var client = new SmtpClient(new ProtocolLogger("smtp.log")))
{
client.ServerCertificateValidationCallback = (s, c, h, e) => true;
client.Connect("smtp.office365.com", 587, SecureSocketOptions.SslOnConnect);
client.Authenticate(new SaslMechanismNtlmIntegrated());
Debug.WriteLine(client.IsAuthenticated);
client.Send(message);
client.Disconnect(true);
}
我从这个GitHub评论中获得了SaslMechanismNtlmIntegrated
类。
每当我运行此代码时,都会收到一个SslHandshakeException
。
以下是异常的详细信息:
MailKit.Security.SslHandshakeException
HResult=0x80131500
Message=An error occurred while attempting to establish an SSL or TLS connection.
One possibility is that you are trying to connect to a port which does not support SSL/TLS.
The other possibility is that the SSL certificate presented by the server is not trusted by the system for one or more of the following reasons:
1. The server is using a self-signed certificate which cannot be verified.
2. The local system is missing a Root or Intermediate certificate needed to verify the server's certificate.
3. The certificate presented by the server is expired or invalid.
See https://github.com/jstedfast/MailKit/blob/master/FAQ.md#InvalidSslCertificate for possible solutions.
Source=MailKit
StackTrace:
at MailKit.Net.Smtp.SmtpClient.<ConnectAsync>d__70.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at MailKit.Net.Smtp.SmtpClient.Connect(String host, Int32 port, SecureSocketOptions options, CancellationToken cancellationToken)
at QuoteAndOrder.SpecialsQuoteWindow.BtnEmail_Click(Object sender, RoutedEventArgs e) in SpecialsQuoteWindow.xaml.cs:line 501
Inner Exception 1:
IOException: The handshake failed due to an unexpected packet format.
我访问了详细信息中提到的FAQ,但是给出的解决方法并没有解决这个问题。
SecureSocketOptions.StartTls
替代SecureSocketOptions.SslOnConnect
。 - willaiendotnet --fx-version 2.2.0 .\YourAppNameHere.dll
)。 - Eric Mutta