I am using MailKit for sending and receiving emails. but when I try to get emails, I get the Authentication Failed error. here is my code:
using MailKit.Net.Pop3;
using MimeKit;
public List<Email> GetEmails()
{
using var emailClient = new Pop3Client();
emailClient.Connect("pop.mail.yahoo.com", 995, true);
emailClient.AuthenticationMechanisms.Remove("XOAUTH2"); //commenting this line won't help.
emailClient.Authenticate("email", "password"); // this line throws 'Authentication Failed' exception.
var emails = new List<Email>();
for (int i = 0; i < 10; i++)
{
var message = emailClient.GetMessage(i);
var emailMessage = new Email
{
Content = message.TextBody,
Subject = message.Subject
};
emails.Add(emailMessage);
}
return emails;
}
Does anyone have any idea?
I know this sounds obvious, but the odds are that you're providing the wrong username and/or password. That's what the error is saying.
You can verify this by looking at the log file:
var emailClient = new Pop3Client(new ProtocolLogger("pop3.log"))
Maybe you can try creating a new Yahoo! Mail account that fails to authenticate just like your real account and give me the username/password for that new account so that I can debug the issue?
Does your username or password contain non-ASCII characters? How about punctuation characters?
If you want me to dig into this, I need to know what the username/password are and what MailKit is sending in case it's sending the wrong strings (pretty sure it's not, but I'll look into it anyway). If you don't give me that info, I can't diagnose the issue.
Related
I am trying to connect into Outlook mailbox, fetching, extracting data from mails and working with them in DataGrid. My problem is, that after few seconds(around 30seconds) my app gets freeze and will show this exception
The IMAP server replied to the 'NAMESPACE' command with a 'BAD'
response: User is authenticated but not connected.
I have read here in stackoverflow, that this is caused by more loggins, that Microsoft allows(more than 20, I think).
My Question is: How to fix it?
My app is in development, so I didn't think for OAUTH2.0 verification. But could be this the solution?
Thanks for any advice.
This is how I am using Mailkit library
public static void MailKitLib(EmailParser emailParser)
{
bool help = true;
do
{
using (var client = new ImapClient())
{
using (var cancel = new System.Threading.CancellationTokenSource())
{
client.Connect(emailParser.ServerName, emailParser.Port, emailParser.IsSSLuse,
cancel.Token);
client.Authenticate(emailParser.Username, emailParser.Password, cancel.Token);
var inbox = client.Inbox;
inbox.Open(FolderAccess.ReadOnly, cancel.Token);
for (int i = 0; i < inbox.Count; i++)
{
var message = inbox.GetMessage(i, cancel.Token);
GetBodyText = message.TextBody;
Problem problem = new Problem(message.MessageId);
if (!dAOProblem.GetAll().Any(x => x.Message_Id.Equals(problem.Message_Id)))
{
dAOProblem.Save(problem);
Alert alert = new Alert(message.MessageId, message.Date.DateTime, message.From.ToString(), 1, problem.Id);
if (!dAOAlert.GetAll().Any(x => x.Id_MimeMessage.Equals(alert.Id_MimeMessage)))
{
dAOAlert.Save(alert);
}
}
}
//client.Disconnect(true, cancel.Token);
}
}
} while (help != false);
}
This is a weird state that Exchange gets into. Search StackOverflow for similar questions. I know it's been answered before (even if not for MailKit specifically).
The error means that you used the correct username and password but your user account does not have access permissions to email over the IMAP protocol.
I am using this below code but unable to read my office 365 Inbox emails from C# code. Once I get this working then later I would need to read emails from shared mailbox.
I’d really appreciate if someone could please help me in fixing this issue or guide me what am I missing here ?
If I use Url as Office365 one then getting this error: "The request failed. The remote server returned an error 401. Unauthorized "
If I use Url as casx16 one (found this in company's Q/A portal) then getting this error: " No mailbox with such GUID "
using Microsoft.Exchange.WebServices.Data;
public static void ReadMyMailbox_2()
{
ExchangeService exchangeService = new ExchangeService();
exchangeService.Credentials = new WebCredentials("ajain", "password ", "MS"); /// ajain is my MSID
// exchangeService.AutodiscoverUrl("a_jain#xyz.com", RedirectionUrlValidationCallback);
exchangeService.Url = new Uri("https://casx16.xyz.com/ews/exchange.asmx");
// exchangeService.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx");
FolderId mailbox = new FolderId(WellKnownFolderName.Inbox, "a_jain#xyz.com");
ItemView itemView = new ItemView(10);
FindItemsResults<Item> result = exchangeService.FindItems(mailbox, itemView);
foreach (var msg in result)
{
EmailMessage message = EmailMessage.Bind(exchangeService, msg.Id);
Console.WriteLine(message.Subject);
}
}
It looks like you're setting up the ExchangeService object correctly. A couple things to try:
Try passing the full email (a_jain#xyz.com) to WebCredentials
Make sure your the domain you're passing to WebCredentials is correct
Try the WebCredentials constructor that only takes username and password.
Note: I don't think autodiscover will work with O365
I'm reading messages using MailKit but I can't read the Auto-Submitted: auto-replied header for some reason. Other headers are read without a problem. Has anyone else experienced this?
Code for getting emails:
var inbox = imapClient.Inbox;
inbox.Open(FolderAccess.ReadOnly);
var uids = inbox.Search(SearchQuery.NotSeen);
return uids.Select(id => new ImapMessage()
{
ImapId = id.Id,
MimeMessage = inbox.GetMessage(id)
});
https://github.com/jstedfast/MailKit
Message:
Same message seen through Outlook, here the Auto-Submitted: auto-replied header is present.
I'm trying to send automated emails from a C# console application from machines to clients all on the same domain via our internal Exchange 2007 server (using SMTP), but I'm hitting a snag with distribution lists that only allow authenticated senders. Basically the mails I'm sending are getting rejected by Exchange with:
#550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ##rfc822;AuthTESTGroup#example.com
I'm using System.Net.Mail.SmtpClient and setting the Credentials property to System.Net.CredentialCache.DefaultNetworkCredentials, but somewhere along the line, the credentials of the account running this program (me, a valid domain user with a valid mailbox) are not getting passed down to Exchange correctly.
I'm using System.Net.CredentialCache.DefaultNetworkCredentials because I do not want to hard code a username or password (either in the code itself or in any sort of configuration file); I want the process to authenticate with our SMTP server using Windows authentication.
Here is a test program I've been using to reproduce the problem (domain names have been anonomized):
using System;
using System.Net.Mail;
namespace ConsoleApplication1
{
class Program
{
static void Main()
{
var smtpClient = new SmtpClient
{
Host = "MAIL",
Port = 25,
DeliveryMethod = SmtpDeliveryMethod.Network,
Credentials = System.Net.CredentialCache.DefaultNetworkCredentials
};
var mailMessage = new MailMessage
{
Body = "Testing",
From = new MailAddress(Environment.UserName + "#example.com"),
Subject = "Testing",
Priority = MailPriority.Normal
};
mailMessage.To.Add("AuthTESTGroup#example.com");
smtpClient.Send(mailMessage);
}
}
}
Whenever I run this as myself (again, I'm a valid user on the domain, with an existing mailbox on the Exchange server) I get an undeliverable bounce message from Exchange with the response:
#550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ##rfc822;AuthTESTGroup#example.com
I talked to our Exchange server admin and he saw the following error from the Exchange server's event log:
Account For Which Logon Failed:
Security ID: NULL SID
Account Name:
Account Domain:
Failure Information:
Failure Reason: Unknown user name or bad password.
Status: 0xc000006d
Sub Status: 0xC0000064
Apparently that status code and sub status code translate to:
0xc000006d This is either due to a bad username or authentication information. Usually logged as status code with 0xc0000064 as substatus
0xC0000064 user name does not exist
So again, it's as if somewhere along the line, my Windows credentials are not getting passed down to the Exchange server even though I'm setting the SmtpClient.Credentials to System.Net.CredentialCache.DefaultNetworkCredentials
Any ideas?
Thanks in advance!
you need to pass username, password
here is a code snippet of how I would do it... keep in mind this is a code snippet you need to make the necessary changes to fit your Use Case
MailClient = new SmtpClient();
MailClient.Credentials = new System.Net.NetworkCredential(username, password);
below is another example but uses the server variable.. this maybe what you need to do try and let me know the server for example you can pass as your domain.com
example :
//SmtpClient client = new SmtpClient("smtp.contoso.com");//this would be server
//client.Credentials = CredentialCache.DefaultNetworkCredentials;
public static void CreateBccTestMessage(string server)
{
MailAddress from = new MailAddress("ben#contoso.com", "Ben Miller");
MailAddress to = new MailAddress("jane#contoso.com", "Jane Clayton");
MailMessage message = new MailMessage(from, to);
message.Subject = "Using the SmtpClient class.";
message.Body = #"Using this feature, you can send an e-mail message from an application very easily.";
MailAddress bcc = new MailAddress("manager1#contoso.com");
message.Bcc.Add(bcc);
SmtpClient client = new SmtpClient(server);
client.Credentials = CredentialCache.DefaultNetworkCredentials;
Console.WriteLine("Sending an e-mail message to {0} and {1}.",
to.DisplayName, message.Bcc.ToString());
try
{
client.Send(message);
}
catch (Exception ex)
{
Console.WriteLine("Exception caught in CreateBccTestMessage(): {0}",
ex.ToString());
}
}
I have done this before without any issue but now I don't know what's wrong. I have a web page with a button for email which I want to send some data to email addresses with.
I asked our web hosting company for server details and the response I got was:
"You can use the following details for mail.
Incoming mail server: mail.ourSite.com Outgoing mail server: mail.ourSite.com
Username and password are the email address and password associated with the email address.
"
I am not sure about the last line but I created a new email address in the web host's control panel.
The code I use is:
// instantiate a new mail definition and load an html
// template into a string which I replace values in
// then the rest of the code below
md.Subject = String.Format("{0} {1} {2}", emailSubject, firstName, lastName);
MailMessage msg = md.CreateMailMessage(emailAddress, replacements, emailBody, new Control());
md.IsBodyHtml = true;
SmtpClient sc = new SmtpClient(emailServer);
sc.Credentials = new NetworkCredential(emailUsername, emailPassword);
try
{
sc.Send(msg);
}
emailServer - mail.ourSite.com (dummy value in this post)
emailUsername - the email address I created in the control panel
emailPassword - the password for the email above
The error I have is that when I send emails to other domains than our own I get
"Bad sequence of commands. The server response was: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server."
When I email to an address within our host then it works fine.
The support is not very supportive so I am asking here what you might think the problem could be? I find it strange that I use the password for an email address I created, should it really be like that?
I think that you are using the wrong email address for the NetworkCredential. It should be the one for your email account that you got from the one providing emailServer.
Try this ..
msg.UseDefaultCredentials = false;
NetworkCredential MyCredential = new NetworkCredential("Email", "Password");
msg.Credentials = MyCredential;
here is code to send mail..
i hope i will helpful to you..
using System.Web.Mail;
using System;
public class MailSender
{
public static bool SendEmail(
string pGmailEmail,
string pGmailPassword,
string pTo,
string pSubject,
string pBody,
System.Web.Mail.MailFormat pFormat,
string pAttachmentPath)
{
try
{
System.Web.Mail.MailMessage myMail = new System.Web.Mail.MailMessage();
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/smtpserver",
"smtp.gmail.com");
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/smtpserverport",
"465");
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/sendusing",
"2");
//sendusing: cdoSendUsingPort, value 2, for sending the message using
//the network.
//smtpauthenticate: Specifies the mechanism used when authenticating
//to an SMTP
//service over the network. Possible values are:
//- cdoAnonymous, value 0. Do not authenticate.
//- cdoBasic, value 1. Use basic clear-text authentication.
//When using this option you have to provide the user name and password
//through the sendusername and sendpassword fields.
//- cdoNTLM, value 2. The current process security context is used to
// authenticate with the service.
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate","1");
//Use 0 for anonymous
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/sendusername",
pGmailEmail);
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/sendpassword",
pGmailPassword);
myMail.Fields.Add
("http://schemas.microsoft.com/cdo/configuration/smtpusessl",
"true");
myMail.From = pGmailEmail;
myMail.To = pTo;
myMail.Subject = pSubject;
myMail.BodyFormat = pFormat;
myMail.Body = pBody;
if (pAttachmentPath.Trim() != "")
{
MailAttachment MyAttachment =
new MailAttachment(pAttachmentPath);
myMail.Attachments.Add(MyAttachment);
myMail.Priority = System.Web.Mail.MailPriority.High;
}
System.Web.Mail.SmtpMail.SmtpServer = "smtp.gmail.com:465";
System.Web.Mail.SmtpMail.Send(myMail);
return true;
}
catch (Exception ex)
{
throw;
}
}
}