MailKit无法验证IMAP

Question

我已经阅读了所有MailKit问题，但是我的仍然无法正常工作。我已经删除了我的实际登录密码，但是该密码对于该帐户是正确的。

using (var client = new ImapClient(new ProtocolLogger(@"c:\temp\imaplog.txt")))
{
    try
    {
        client.Connect("outlook.office365.com", 993, true);
        client.AuthenticationMechanisms.Remove("XOAUTH2");
        client.AuthenticationMechanisms.Clear();
        client.SslProtocols = SslProtocols.Tls;
        client.Authenticate(<username>,<password>);
        //var inbox = client.mai;
        //inbox.Open(FolderAccess.ReadWrite);
        //var uids = await inbox.SearchAsync(MailKit.Search.SearchQuery.NotSeen);
    }
    catch (Exception exc)
    {
    }
}

IMAP日志文件

Connected to imaps://outlook.office365.com:993/
S: * OK The Microsoft Exchange IMAP4 service is ready. [UwBOADYAUABSADAAMQBDAEEAMAAwADAAMwAuAHAAcgBvAGQALgBlAHgAYwBoAGEAbgBnAGUAbABhAGIAcwAuAGMAbwBtAA==]
C: A00000000 CAPABILITY
S: * CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=XOAUTH2 SASL-IR UIDPLUS MOVE ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+
S: A00000000 OK CAPABILITY completed.
C: A00000001 LOGIN username password
S: A00000001 NO LOGIN failed.

Answer 1

您需要进入Office365设置，并确保允许通过“安全性较低的应用程序”登录IMAP。

FYI：https://developer.microsoft.com/en-us/office/blogs/end-of-support-for-basic-authentication-access-to-exchange-online-apis-for-office-365-customers/

换句话说，您需要在2020年10月之前开始使用XOAUTH2。