I am using CDO from sending emails.
It is the only way I found that works from a certian customer. Standard smtp sending does not
the problem with this method is that it works ok for external email recipients but not for the internal ones.
CDO.Message oMsg = new CDO.Message();
CDO.IConfiguration iConfg;
iConfg = oMsg.Configuration;
ADODB.Fields oFields;
oFields = iConfg.Fields;
ADODB.Field oField = oFields["http://schemas.microsoft.com/cdo/configuration/sendusing"];
oField.Value = 2;
ADODB.Field oServer = oFields["http://schemas.microsoft.com/cdo/configuration/smtpserver"];
oServer.Value = Server;
oFields.Update();
oMsg.Subject = subject;
oMsg.From = Sender;
oMsg.To = recipient;
oMsg.HTMLBody = body;
oMsg.Send();
Hope someone has an idea
The code does not break
it just does not send an emal.
Can I get an error from the object somehow?
Related
Im trying to send an email with the office 365 smtp, but im getting the following error:
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57
Client not authenticated to send mail. Error: 535 5.7.139
Authentication unsuccessful, the user credentials were incorrect.
[XXXX.XXXX.prod.outlook.com]
I noticed that some things got changed "recently" with the office 365 smtp and the most recent code, that I found, that works for most people was this:
SmtpClient mySmtpClient = new SmtpClient();
mySmtpClient.Host = "smtp.office365.com";
mySmtpClient.Port = 587;
mySmtpClient.UseDefaultCredentials = false;
mySmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
mySmtpClient.Credentials = new NetworkCredential(email, password);
mySmtpClient.TargetName = "STARTTLS/smtp.office365.com";
mySmtpClient.EnableSsl = true;
// add from,to mailaddresses
MailAddress from = new MailAddress(email);
MailAddress to = new MailAddress(email);
MailMessage myMail = new System.Net.Mail.MailMessage(from, to);
// set subject and encoding
myMail.Subject = "Test message";
myMail.SubjectEncoding = System.Text.Encoding.UTF8;
// set body-message and encoding
myMail.Body = "<b>Test Mail</b><br>using <b>HTML</b>.";
myMail.BodyEncoding = System.Text.Encoding.UTF8;
// text or html
myMail.IsBodyHtml = true;
mySmtpClient.Send(myMail);
But Im still getting the same error as before (MustIssueStartTlsFirst).
Anyone know the problem?
hi im geting my email list from db in a listbox(email_c) and i need to send to all
this is the error that i get with my code
System.FormatException: 'The specified string is not in the form required for an e-mail address.'
login = new NetworkCredential(txtuser.Text, txtPassword.Text);
client1 = new SmtpClient(txtSmtp.Text);
client1.Port = Convert.ToInt32(txtPort.Text);
client1.Credentials = login;
string emails = email_c.GetItemText(email_c.Items);
msg = new MailMessage { From = new MailAddress(txtuser.Text + txtSmtp.Text.Replace("smtp.", "#"), "Sesizare", Encoding.UTF8) };
msg.To.Add(new MailAddress(emails));
if (!string.IsNullOrEmpty(txtCC.Text))
msg.To.Add(new MailAddress(txtCC.Text));
msg.Subject = txtSubject.Text;
msg.Body = "Abonamentul dumneavoastra a fost activat";
msg.BodyEncoding = Encoding.UTF8;
msg.IsBodyHtml = true;
msg.Priority = MailPriority.Normal;
msg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
client1.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
string userstate = "Ttimite...";
client1.SendAsync(msg, userstate);
The MailAddress does represent the address of an electronic mail sender or recipient. That means it is one single email.
Because of that, instead of writing all the email string into a single string variable you should iterate over the items in the listbox and add each of them individually to the MailMessage. Something like this:
foreach (var email in email_c.Items)
{
msg.To.Add(new MailAddress(email.ToString()));
}
I have a problem to received mails in gmail!
I tested it with outlook, yahoo, gmx and at all I have got the mail from my tool but not in my gmail. Anyone has an idea?
mtpClient clientxy = new SmtpClient("smtp.mydomain.com");
clientxy.Port = 25;
clientxy.EnableSsl = false;
clientxy.Timeout = 3600;
clientxy.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
clientxy.UseDefaultCredentials = false;
NetworkCredential Credentials = new NetworkCredential("noreply#mydomain.com", "PWD");
clientxy.Credentials = Credentials;
MailMessage msg = new MailMessage("noreply#mydomain.com", text_Email.Text);
msg.BodyEncoding = UTF8Encoding.UTF8;
msg.Subject = "Subject";
string htmlBody;
msg.IsBodyHtml = true;
htmlBody = "<html>---html code";
msg.Body = htmlBody;
Attachment inline = new Attachment(#"file.xml");
inline.ContentDisposition.Inline = true;
msg.Attachments.Add(inline);
clientxy.Send(msg);
here php code this work
$mail = new PHPMailer();
$mail->isSMTP();
//$mail->SMTPDebug = 2;
$mail->SMTPAuth = TRUE;
$mail->Host = "smtp.mydomain.com";
$mail->Port = 25;
$mail->Username = "noreply#mydomain.com";
$mail->Password = "";
$mail->SetFrom("noreply#mydomain.com", "");
$mail->Subject = utf8_decode("sub");
$mail->AltBody = utf8_decode("body");
$mail->MsgHTML(utf8_decode($msg));
$mail->AddAddress("to");
$mail->AddBCC("bcc#mydomain.at");
I think the code is OK But I don't know what the problem is.
ONLY in gmail I never received it.
Thanks!
Please check Gmail settings. It is not allowed to send via 25 port.
Try this settings instead
clientxy.Port = 465;
clientxy.EnableSsl = true;
I found the problem!
I dont know why gmail dont receive emails from smtpclient but i install a nuget with an other smtp function and this works !
Thanks all for help!!
following setting should work
clientxy.Port = 587;
clientxy.EnableSsl = true;
Another point is
You must change your password at least once. And try to use a secure level password (do not use the same user as password, 123456, etc.)
I have an .Net 4.5 application that sends an email, with an attachment. It works as expected when the email is opened on a desktop, but when opened on a mobile (iPhone in this case) the attachment shows as inline HTML not as an attachment.
When however I forward the same email from my desktop to the phone, the attachment shows up correctly on my phone so I am almost certain that it has to do with how I am specifying mime or content-type, disposition etc. but I can't see what I am doing wrong.
Here is the code - note that
att.ContentType = new System.Net.Mime.ContentType("multipart/mixed");
does create an attachment on iPhone but it is of type = mime-attachment that will not open.
I'm stumped & client awaits - any help greatly appreciated !
private void SendNotice(string body, string attachment, string email, bool pdf = false)
{
MailMessage message = new MailMessage();
message.From = new MailAddress(ConfigurationManager.AppSettings["SMTP.SendFrom"]);
message.Subject = ConfigurationManager.AppSettings["MatchedNoticeSubject"];
message.To.Add(new MailAddress(email));
message.ReplyToList.Add(new MailAddress(ConfigurationManager.AppSettings["SMTP.ReplyTo"]));
message.Body = body;
message.IsBodyHtml = true;
Attachment att = Attachment.CreateAttachmentFromString(attachment, "SeniorInfo.html", System.Text.Encoding.ASCII, "text/html");
//specifying this creates an attachment of type "mime-attachment" that does not open
//att.ContentType = new System.Net.Mime.ContentType("multipart/mixed");
message.Attachments.Add(att);
SmtpClient server = new SmtpClient()
{
EnableSsl = (ConfigurationManager.AppSettings["SMTP.EnableSSL"].ToLower() == "true"),
Host = ConfigurationManager.AppSettings["SMTP.Server"],
Port = Convert.ToInt16(ConfigurationManager.AppSettings["SMTP.Port"]),
Credentials = new System.Net.NetworkCredential(ConfigurationManager.AppSettings["SMTP.Account"], ConfigurationManager.AppSettings["SMTP.Password"])
};
server.Send(message);
}
Solved after some trial and error fiddling.
Counter-intuitively the attachment ContentDisposition object is READONLY which lead me to believe that I couldn't meddle in it however the read object is apparently a reference to the actual Attachment.ContentDisposition since setting values on the read instance does (apparently) correct the problem. Also used the Enum for MediaTypeNames (System.Net.Mime.MediaTypeNames.Text.Html) tho I don't think that was the issue.
Email send now looks like this :
private void SendMatchNotice(string body, string attachment, string email, bool pdf = false)
{
MailMessage message = new MailMessage();
message.From = new MailAddress(ConfigurationManager.AppSettings["SMTP.SendFrom"]);
message.Subject = ConfigurationManager.AppSettings["MatchedNoticeSubject"];
message.To.Add(new MailAddress(email));
message.ReplyToList.Add(new MailAddress(ConfigurationManager.AppSettings["SMTP.ReplyTo"]));
message.Body = body;
message.IsBodyHtml = true;
// Create the file attachment for this e-mail message.
Attachment att = Attachment.CreateAttachmentFromString(attachment, "SeniorInfo.html", System.Text.Encoding.ASCII, System.Net.Mime.MediaTypeNames.Text.Html);
System.Net.Mime.ContentDisposition disposition = att.ContentDisposition;
disposition.DispositionType = "attachment";
disposition.Inline = false;
disposition.FileName = "SeniorInfo.html";
disposition.CreationDate = DateTime.Now;
disposition.ModificationDate = DateTime.Now;
disposition.ReadDate = DateTime.Now;
message.Attachments.Add(att);
SmtpClient server = new SmtpClient()
{
EnableSsl = (ConfigurationManager.AppSettings["SMTP.EnableSSL"].ToLower() == "true"),
Host = ConfigurationManager.AppSettings["SMTP.Server"],
Port = Convert.ToInt16(ConfigurationManager.AppSettings["SMTP.Port"]),
Credentials = new System.Net.NetworkCredential(ConfigurationManager.AppSettings["SMTP.Account"], ConfigurationManager.AppSettings["SMTP.Password"])
};
server.Send(message);
}
I use this code to try and send an email. After a few seconds, it shows me an error message claiming the operation has timed out. How can I resolve this issue?
try
{
MailAddress from = new MailAddress("from#yahoo.com", "name", Encoding.UTF8);
MailAddress to = new MailAddress("to#yahoo.com");
MailMessage message = new MailMessage(from, to);
message.Subject = "Test";
message.SubjectEncoding = Encoding.UTF8;
message.Body = "Test";
message.BodyEncoding = Encoding.UTF8;
SmtpClient client = new SmtpClient();
client.Host = "smtp.mail.yahoo.com";
client.Port = 465;
client.EnableSsl = true;
client.Credentials = new NetworkCredential("example#yahoo.com", "Password");
client.Send(message);
MessageBox.Show("sending Successfully!!!");
}
catch (SmtpException ex)
{
MessageBox.Show(ex.ToString());
}
Are you sure that you can reach smtp.mail.yahoo.com on port 465? Sounds pretty much like a network related issue. Generally when something times out, it means that it tries to connect to the server for a certain amount of time and them stops and gives you an error.
One easy way to test this is to telnet to smtp.mail.yahoo.com on port 465 and see if it times out. You can use Putty or the built in telnet-client in windows, if you have it installed.
As per my understanding, your code won't work because yahoo.com does not provide you access via SMTP. For that you need to upgrade to Yahoo! Mail Plus.
Couldn't find any sort of kb from Yahoo! on this. I got the information from a Yahoo! article on How to read Yahoo! Mail Plus using Outlook Express. The first two lines of the article are very relevant.
Do you want to read and send your Yahoo! email with Outlook Express?
If you are a Yahoo! Mail Plus user you can.
And also, the outgoing SMTP server should be
client.Host = "plus.smtp.mail.yahoo.com";
i had the same problem
you have to set the clietn.port as 25 and you have to specify your login an password in client.Credentials = new NetworkCredential(login,password)
when i did that i can send mail without problem
there is the code
{
SmtpClient client = new SmtpClient("188.125.69.59");//you can put the ip adress or the dns of smtp server (smtp.mail.yahoo.com as exemple)
// Specify the e-mail sender.
// Create a mailing address that includes a UTF8 character
// in the display name.
MailAddress from = new MailAddress("from#yahoo.fr");
// Set destinations for the e-mail message.
MailAddress to = new MailAddress("to#gmail.com");
// Specify the message content.
MailMessage message = new MailMessage(from, to);
message.Body = "This is a test e-mail message sent by an application. ";
// Include some non-ASCII characters in body and subject.
string someArrows = new string(new char[] {'\u2190', '\u2191', '\u2192', '\u2193'});
message.Body ="cc";
message.BodyEncoding = System.Text.Encoding.UTF8;
message.Subject = "test message 1";
message.SubjectEncoding = System.Text.Encoding.UTF8;
string userState = "test message1";
MessageBox.Show("sending");
client.Port = 25;
// client.Timeout = 40000;
client.ServicePoint.MaxIdleTime = 1;
client.Credentials = new System.Net.NetworkCredential("from#yahoo.fr", "pass");
//client.SendAsync(message, userState);
client.Send(message);
MessageBox.Show("Sending message... press c to cancel mail. Press any other key to exit.");
string answer = Console.ReadLine();
// If the user canceled the send, and mail hasn't been sent yet,
// then cancel the pending operation.
// if (answer.StartsWith("c") && mailSent == false)
//{
// client.SendAsyncCancel();
//}
// Clean up.
message.Dispose();
MessageBox.Show("Goodbye.");
}
Use following setting for domain #yahoo.co.in.
var smtp = new System.Net.Mail.SmtpClient();
{
smtp.Host ="smtp.mail.yahoo.co.in";
smtp.Port = 25;
smtp.EnableSsl = true;
smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
smtp.Timeout = 20000;
}