Mailkit对Imap的身份验证失败
本文关键字:身份验证 失败 Imap Mailkit | 更新日期: 2023-09-27 18:07:31
我正在尝试使用MimeKit和MailKit从收件箱中获取电子邮件。
但是登录到邮件服务器Imap不工作。
我使用ssl的993端口。
我已经尝试连接/LOGIN/FETCH端口143与Telnet,它工作。
我已经尝试连接/LOGIN/FETCH在端口993与Openssl,它工作。
Mailkit v.1.4.2.1
KODE:
using (var client = new ImapClient(new ProtocolLogger("imap.log")))
{
try
{
client.Connect(server, this.port, true);
client.AuthenticationMechanisms.Remove("XOAUTH2");
client.Authenticate(user, password);
var inbox = client.Inbox;
inbox.Open(FolderAccess.ReadWrite);
if (inbox.Count > 0)
{
var range = Enumerable.Range(0, inbox.Count).ToArray();
inbox.AddFlags(range, MessageFlags.Deleted, false);
inbox.Expunge();
}
client.Disconnect(true);
}
catch (AuthenticationException e)
{
throw e;
}
}
IMAP.LOG :
Connected to imaps://xxxx.xxx.xx:993/
S: * OK The Microsoft Exchange IMAP4 service is ready.
C: A00000000 CAPABILITY
S: * CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=NTLM AUTH=GSSAPI UIDPLUS MOVE ID CHILDREN IDLE NAMESPACE LITERAL+
S: A00000000 OK CAPABILITY completed.
C: A00000001 AUTHENTICATE NTLM
S: +
C: TlRMTVNTUAABAAAABwIIAAAAAAAgAAAAAAAAACAAAAA=
S: +
TlRMTVNTUAACAAAABgAGADgAAAAFAokCETTDB74D2YsAAAAAAAAAAKIAogA+AAAABgLwIwAAAA9LAE0ARAACAAYASwBNAEQAAQAUAEsATQBEAEUAWABDADIAMAAwADYABAAaAGkAbgB0AGUAcgBuAC4AawBtAGQALgBkAGsAAwAwAEsATQBEAEUAWABDADIAMAAwADYALgBpAG4AdABlAHIAbgAuAGsAbQBkAC4AZABrAAUAGgBpAG4AdABlAHIAbgAuAGsAbQBkAC4AZABrAAcACAA8TRLTaRLSAQAAAAA=
C: TlRMTVNTUAADAAAAGAAYAFYAAAAYABgAbgAAAAAAAABIAAAADgAOAEgAAAAAAAAAVgAAAAAAAACGAAAAAYIIAgoAWikAAAAPaQBvAG0AdABlAHMAdAA6stwc8LXYfAAAAAAAAAAAAAAAAAAAAAC5L0RCGGq9hCGwriyfURwGscjNCDTBeSA=
S: A00000001 NO AUTHENTICATE failed.
C: A00000002 AUTHENTICATE PLAIN
S: +
C: XXXXXXXXXX
S: A00000002 NO AUTHENTICATE failed.
C: A00000003 LOGIN xxxxxxxxx xxxxxxxx
S: A00000003 NO Server Unavailable. 15
S: * BYE Connection closed. 14A
异常 :
AuthenticationException: “Authentication failed.”
at MailKit.Net.Imap.ImapClient.Authenticate(Encoding encoding, ICredentials credentials, CancellationToken cancellationToken)
at MailKit.MailService.Authenticate(String userName, String password, CancellationToken cancellationToken)
在AUTHENTICATE NTLM
认证中有一个bug,这是MailKit在您的情况下尝试的第一个认证机制。不幸的是,在Exchange中也有一个bug(?),当NTLM验证失败时,它似乎会自动拒绝AUTHENTICATE PLAIN
,这是MailKit返回尝试的。
作为一个解决方案,在MailKit中禁用NTLM
认证,通过这样做:
client.AuthenticationMechanisms.Remove ("NTLM");
结果代码应该是这样的:
using (var client = new ImapClient(new ProtocolLogger("imap.log")))
{
try
{
client.Connect(server, this.port, true);
client.AuthenticationMechanisms.Remove("XOAUTH2");
client.AuthenticationMechanisms.Remove("NTLM");
client.Authenticate(user, password);
var inbox = client.Inbox;
inbox.Open(FolderAccess.ReadWrite);
if (inbox.Count > 0)
{
var range = Enumerable.Range(0, inbox.Count).ToArray();
inbox.AddFlags(range, MessageFlags.Deleted, false);
inbox.Expunge();
}
client.Disconnect(true);
}
catch (AuthenticationException e)
{
throw e;
}
}