I'm trying to create a Button_Click event that sends an email to a gmail account. This is the error I'm getting:
Unable to read data from the transport connection: net_io_connectionclosed.
It's pointing out Line 63 which is:
client.Send(mail);
Here is the code:
protected void Button2_Click(object sender, EventArgs e)
{
System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
SmtpClient client = new SmtpClient();
client.Port = 465;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Host = "smtp.gmail.com";
mail.IsBodyHtml = true;
mail.To.Add(new MailAddress("yourclassroomconnection#gmail.com"));
mail.From = new MailAddress("yourclassroomconnection#gmail.com");
mail.Subject = "New Order";
string bodyTemplate = Label2.Text;
mail.Body = bodyTemplate;
client.Send(mail);
}
Any idea where I'm going wrong?
You can use below code as a small test. Try sending email with minimal option. Then add other options like html support. So you can narrow down the problem when you're experimenting a new thing.
try {
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("your_email_address#gmail.com");
mail.To.Add("to_address");
mail.Subject = "Test Mail";
mail.Body = "This is for testing SMTP mail from GMAIL";
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("username", "password");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
} catch (Exception ex)
{
}
You need to generate app specific password and use it here instead of your gmail password.
Please read this tutorial also.
http://csharp.net-informations.com/communications/csharp-smtp-mail.htm
Hard coding the username and password (i.e. the credentials) may be sometimes frustrating.
What you can do is, you can add these credentials in web.config file only once. And you are good to go. Here is the better solution.
web.config file code goes as follows:
<configuration>
<appSettings>
<add key="receiverEmail" value ="ReceiverEmailAddressHere"/>
</appSettings>
</appSettings>
<system.net>
<mailSettings>
<smtp deliveryMethod="Network" from="yourclassroomconnection#gmail.com">
<network host="smtp.gmail.com" port="587" enableSsl="true"
userName="YourActualUsername" password="YourActualPassword"/>
</smtp>
</mailSettings>
</system.net>
</configuration>
Please note that you have to change the host according to your gmail account. I am not sure whether the host is correct. I am using outlook to send emails so the host would be smtp-mail.outlook.com
This is how your web.config file would have all the necessary connection credentials that you define at one place at a time. You don't have to use it everytime you use the Email functionality in your application.
protected void btnSendMail_Click(object sender, EventArgs e)
{
MailMessage msg = new MailMessage();
// get the receiver email address from web.config
msg.To.Add(ConfigurationManager.AppSettings["receiverEmail"]);
// get sender email address path from web.config file
var address = (SmtpSection)ConfigurationManager.GetSection("system.net/mailSettings/smtp");
string emailAddress = address.Network.UserName;
string password = address.Network.Password;
NetworkCredential credential = new NetworkCredential(emailAddress, password);
msg.Subject = " Subject text here "
}
SmtpClient client = new SmtpClient();
client.EnableSsl = true;
client.Send(msg); // send the message
The key point here is to access the sender's email address and receiver's email address. Note that I have used (SmtpSection)ConfigurationManager.GetSection("system.net/mailSettings/smtp"); This will navigate your web.config file and search through the hierarchy available in it - Grabs the email address, fails if it doesn't get email address.
Hope this helps. Happy coding!
Related
I am having a very hard time trying to send an email through an a2 hosting account. I know the code is correct as I have the same code sending emails through the Google SMTP. I was wondering if anyone had any experience or examples using a2 hosting email and SMTP c#. I've read through their documentation and it states to use user#hostingdomain.com for the username and then your password. For the server you can use the full domain name or the server name. For the port it says 587 or 465. I have tried a combination of all of these things and have not been able to connect. I keep getting this exception
"Unable to read data from the transport connection:
net_io_connectionclosed."
Thank you for any help.
Below is an example of the code I am using.
SmtpClient smtpClient = new SmtpClient();
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress("testuser#mydomain.a2hosted.com");
NetworkCredential myCred = new NetworkCredential(
"testuser#mydomain.a2hosted.com", "mypassword");
smtpClient.Host = "mydomain.a2hosted.com";
//smtpClient.Credentials = myCred;
smtpClient.Port = 587;
smtpClient.EnableSsl = true;
smtpClient.UseDefaultCredentials = false;
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
smtpClient.Credentials = myCred;
message.From = fromAddress;
message.Subject = "your subject";
//Set IsBodyHtml to true means you can send HTML email.
message.IsBodyHtml = true;
message.Body = "<h1>your message body</h1>";
message.To.Add("myemail#gmail.com");
smtpClient.Send(message);
All in here.
https://www.a2hosting.co.uk/kb/a2-hosting-products/windows-hosting/using-asp-net-to-send-e-mail-messages#C-example
Replace domain.a2hosted.com with your own domain name.
Replace user#example.com with the name of an e-mail account you created in Plesk.
Replace password with the password for the e-mail account you specified in the previous step.
From my config file.
<mailSettings>
<smtp from="noreply#goldendate.co.uk">
<network enableSsl="false"
defaultCredentials="false" host="yourdomain"
password="yourpassword" port="25"
userName="youremailaddress" />
</mailSettings>
If you work remotely, it'll not work.
You have to upload your code to a2hosting server and then it'll work.
I have been trying to send an email via C# from a gmail account for account registration for my website.
I have tried several ways however the same exception continues to pop up: System.Net.Mail.Smtp Exception - Connection has timed out.
This is what I inluded in my Web.config file:
<system.net>
<mailSettings>
<smtp deliveryMethod="Network"
from="Writely <mrbk.writely#gmail.com>">
<network host="smtp.gmail.com"
port="465"
enableSsl="true"
defaultCredentials="false"
userName="mrbk.writely#gmail.com"
password="******" />
</smtp>
</mailSettings>
</system.net>
where writely is the name of my website, and mrbk.writely#gmail.com is the account I wish to send an email from.
Then in my Account Controller when I connect with my database and save the user in my table, I am creating my MailMessage object and attempting to same the mail by:
using (DBConnection conn = new DBConnection())
{
conn.UserInfoes.Add(userInfo);
conn.SaveChanges();
MailMessage mail = new MailMessage();
mail.From = new MailAddress("mrbk.writely#gmail.com");
mail.To.Add("bernice.zerafa11#gmail.com");
mail.Subject = "Welcome to Writely";
mail.Body = "Test content";
SmtpClient smtp = new SmtpClient();
smtp.Send(mail);
}
Am I missing something or doing something wrong? I read that this is the good way to do this in some other question on stack overflow so I really don't know what's the problem here.
Thanks for your help :)
You need to tell the SmtpClient what settings to use. It does not automatically read this information from the Web.Config file.
SmtpClient smtp = new SmtpClient("smtp.gmail.com", 465);
smtp.Credentials = new NetworkCredential("mrbk.writely#gmail.com", "***");
smtp.EnableSsl = true;
smtp.Send(mail);
gmail requires authentication:
Outgoing Mail (SMTP) Server
requires TLS or SSL: smtp.gmail.com (use authentication)
Use Authentication: Yes
Port for TLS/STARTTLS: 587
Port for SSL: 465
so what i did is
var client = new SmtpClient("smtp.gmail.com", 587)
{
Credentials = new NetworkCredential("mrbk.writely#gmail.com", "mypwd"),
EnableSsl = true
};
client.Send("bernice.zerafa11#gmail.com", "bernice.zerafa11#gmail.com", "Welcome to Writely", "Test content");
I had the exact same problem and it's resolved after switching the port number from 465 to 587.
I had the problem on "email confirmation", "password recovery", and "sending email" and now all 3 problems are resolved :).
I know it's a pretty old post, but I usually use the existing posts to find answers instead of asking for new questions.
Thank you all for all your helps.
As I have already answered here.
This problem can also be caused by a security configuration in you gmail account.
The correct port is 587, but to authenticate you need to allow access from less secure apps in your gmail account.
Try it here
It worked for me, hope it helps..
Example in asp.net web forms/sharepoint
StringBuilder Body = new StringBuilder();
Body.Append("Your text");
String FromEmail = "you email";
String DisplayNameFromEmailMedico = "display when you receive email";
MailMessage message = new MailMessage();
message.From = new MailAddress(FromEmail, DisplayNameFromEmailMedico);
message.To.Add(new MailAddress("myclient#gmail.com"));
message.Subject = "subject that print in email";
message.IsBodyHtml = true;
message.Body = Body.ToString();
SmtpClient client = new SmtpClient();
NetworkCredential myCreds = new NetworkCredential("yoursmtpemail#gmail.com", "key from email smtp", "");
client.EnableSsl = true;
client.Credentials = myCreds;
client.Send(message);
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
send email asp.net c#
I have sent mail several times using the technique several times before but somehow it doesnt work i am providing the code in the following:
MailMessage myMailMessage = new MailMessage();
myMailMessage.Subject = "Response From Client";
myMailMessage.Body = "hello word";
myMailMessage.From = new MailAddress("mymail#gmail.com", "jub");
myMailMessage.To.Add(new MailAddress("mymail#gmail.com", "Softden"));
SmtpClient mySmtpClient = new SmtpClient();
mySmtpClient.Send(myMailMessage);
and my web.config is:
<mailSettings>
<smtp deliveryMethod = "Network" from="Jubair <mymail#gmail.com>">
<network defaultCredentials="false" enableSsl="true" userName="mymail#gmail.com" password="Mypassword" host="smtp.gmail.com" port="587"></network>
</smtp>
</mailSettings>
it says the smtp server requires a secure connection or the client was not authenticated.. Please help
Try adding something like this
Per Dominic's answer on Stackoverflow look at he following example
using System.Net;
using System.Net.Mail;
var fromAddress = new MailAddress("from#gmail.com", "From Name");
var toAddress = new MailAddress("to#example.com", "To Name");
const string fromPassword = "fromPassword";
const string subject = "Subject";
const string body = "Body";
var smtp = new SmtpClient
{
Host = "smtp.gmail.com",
Port = 587,
EnableSsl = true,
DeliveryMethod = SmtpDeliveryMethod.Network,
//UseDefaultCredentials = false,
Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
};
using (var message = new MailMessage(fromAddress, toAddress)
{
Subject = subject,
Body = body
})
{
smtp.Send(message);
}
//----------------- A simple approach below ---------------
I just tested this below and it works
var mail = new MailMessage();
// Set the to and from addresses.
// The from address must be your GMail account
mail.From = new MailAddress("noreplyXYZ#gmail.com");
mail.To.Add(new MailAddress(to));
// Define the message
mail.Subject = subject;
mail.IsBodyHtml = isHtml;
mail.Body = message;
// Create a new Smpt Client using Google's servers
var mailclient = new SmtpClient();
mailclient.Host = "smtp.gmail.com";//ForGmail
mailclient.Port = 587; //ForGmail
// This is the critical part, you must enable SSL
mailclient.EnableSsl = true;//ForGmail
//mailclient.EnableSsl = false;
mailclient.UseDefaultCredentials = true;
// Specify your authentication details
mailclient.Credentials = new System.Net.NetworkCredential("fromAddress#gmail.com", "xxxx123");//ForGmail
mailclient.Send(mail);
mailclient.Dispose();
//The .config settings there are two options on how you could set this up I am suspecting that this is the issue you are having
<system.net>
<mailSettings>
<smtp from="from#gmail.com" deliveryMethod="Network">
<network userName="from#gmail.com" password="mypassword" host="smtp.gmail.com" port="587"/>
</smtp>
</mailSettings>
</system.net>
or option 2
<configuration>
<appSettings>
<add key="smtpClientHost" value="mail.localhost.com"/> //SMTP Client host name
<add key="portNumber" value="587"/>
<add key="fromAddress" value="yourEmailAddress#gmail.com"/>
</appSettings>
</configuration>
Send Email from Yahoo, Gmail, Hotmail (C#)
http://www.codeproject.com/Tips/520998/Send-Email-from-Yahoo-Gmail-Hotmail-Csharp
These are evry good tutorials with samples. make your demo email id. pass your id and its password as parameters. and send mail to anyone.
http://www.codeproject.com/Articles/15807/Easy-SMTP-Mail-Using-ASP-NET-2-0
http://www.codeproject.com/Tips/371417/Send-Mail-Contact-Form-using-ASP-NET-and-Csharp
http://www.codeproject.com/Tips/490604/Sending-mail-using-ASP-NET-with-optional-parameter
if you are still unable to send email make sure to change the port number. but 587 should work normally.
Make sure you contact the email server side to see what kind of authentication they accept to relay.
I have been trying to send an email by C#. I have Googled for various examples and have taken bits and pieces from each and from the standard code which everyone would most probably be using.
string to = "receiver#domain.com";
string from = "sender#domain.com";
string subject = "Hello World!";
string body = "Hello Body!";
MailMessage message = new MailMessage(from, to, subject, body);
SmtpClient client = new SmtpClient("smtp.domain.com");
client.Credentials = new NetworkCredential("test#domain.com", "password");
client.Send(message);
However, I keep getting an error stating
System.Net.Mail.SmtpException: Mailbox
unavailable. The server response was:
Access denied - Invalid HELO name (See
RFC2821 4.1.1.1)
So, what do I do now? Is SmtpClient supposed to be special and only work on specific SMTP servers?
It seems your username/password pair is not authenticating successfully with your SMTP server.
EDIT
I think, I found what's wrong here. I have corrected your version below.
string to = "receiver#domain.com";
//It seems, your mail server demands to use the same email-id in SENDER as with which you're authenticating.
//string from = "sender#domain.com";
string from = "test#domain.com";
string subject = "Hello World!";
string body = "Hello Body!";
MailMessage message = new MailMessage(from, to, subject, body);
SmtpClient client = new SmtpClient("smtp.domain.com");
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential("test#domain.com", "password");
client.Send(message);
Have you tried setting your auth credentials in the web.Config?
<system.net>
<mailSettings>
<smtp from="test#foo.com">
<network host="smtpserver1" port="25" userName="username" password="secret" defaultCredentials="true" />
</smtp>
</mailSettings>
</system.net>
and your code behind
MailMessage message = new MailMessage();
message.From = new MailAddress("sender#foo.bar.com");
message.To.Add(new MailAddress("recipient1#foo.bar.com"));
message.To.Add(new MailAddress("recipient2#foo.bar.com"));
message.To.Add(new MailAddress("recipient3#foo.bar.com"));
message.CC.Add(new MailAddress("carboncopy#foo.bar.com"));
message.Subject = "This is my subject";
message.Body = "This is the content";
SmtpClient client = new SmtpClient();
client.Send(message);
Try this:
string to = "receiver#domain.com";
string from = "sender#domain.com";
string subject = "Hello World!";
string body = "Hello Body!";
MailMessage message = new MailMessage(from, to, subject, body);
SmtpClient client = new SmtpClient("smtp.domain.com");
// explicitly declare that you will be providing the credentials:
client.UseDefaultCredentials = false;
// drop the #domain stuff from your user name: (The API already knows the domain
// from the construction of the SmtpClient instance
client.Credentials = new NetworkCredential("test", "password");
client.Send(message);
In my case, it was a wrong port. The configuration provided by the hosting didn't worked both SSL (465) and no SSL (25).
I used MS Outlook to "crack" the configuration, and then copied to my application. It was 587 SSL.
This can happen if you don't set EnableSsl.
client.EnableSsl = true;
If you have a webmail client available and you see a cPanel logo it could be a setting there as well.
We got the exception and asked our hosting company to go into:
"Root WHM > Service Configuration >
Exim Configuration Manager > Basic Editor > ACL Options"
and set the Require RFC-compliant HELO setting to Off.
This worked for us after fixing the next error:
SMTP AUTH is required for message submission on port 587
Source:
https://serverfault.com/a/912351/293367
I am using asp.net 3.5 and C#.
I want to send mail from asp.net, for that I have got some details from my hosting provider
which are these:
mail.MySite.net
UserName
Password
But I am unable to send mail through these details, I have done the following changes in my web.config file:
<system.net>
<mailSettings>
<smtp>
<network
host="mail.MySite.net"
port="8080"
userName="UserName"
password="Password" />
</smtp>
</mailSettings>
</system.net>
Also, at the code behind I am writing this function:
MailMessage mail = new MailMessage("webmaster#mySite.net", "XYZ#gmail.com");
mail.Subject = "Hi";
mail.Body = "Test Mail from ASP.NET";
mail.IsBodyHtml = false;
SmtpClient smp = new SmtpClient();
smp.Send(mail);
but I am getting error message as message sending failed.
Please let me know what I am doing wrong and what I have to do to make it work fine.
Thanks in advance.
Do you need to provide the client credentials?
smp.Credentials = CredentialCache.DefaultNetworkCredentials;
or
smp.Credentials = new NetworkCredential("yourUserID", "yourPassword", "yourDomainName");
Also, the exact exception you are getting would be useful.
See a post by Scott Guthrie for more help.
I doubt port 8080 is the correct smtp port. Perhaps port 25 or 587.
Sending an email through asp.net c# is not a complicated thing... just we know about smtp port and host...
MailAddress to = new MailAddress("Email Id");
MailAddress from = new MailAddress("Email Id");
MailMessage mail = new MailMessage(from, to);
mail.Subject = "";
mail.Body = "";
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.Credentials = new NetworkCredential(
"Email Id", "Password");
smtp.EnableSsl = true;
smtp.Send(mail);
Without using SMTP,Add using Microsoft.Office.Interop.Outlook; reference
Application app = new Application();
NameSpace ns = app.GetNamespace("mapi");
ns.Logon("Email-Id", "Password", false, true);
MailItem message = (MailItem)app.CreateItem(OlItemType.olMailItem);
message.To = "To-Email_ID";
message.Subject = "A simple test message";
message.Body = "This is a test. It should work";
message.Attachments.Add(#"File_Path", Type.Missing, Type.Missing, Type.Missing);
message.Send();
ns.Logoff();
I have very similar code to yours that works, I think the difference is you need to supply the IP address to your SMTP server in the constructor for the SMTP client.
MailMessage Email = new MailMessage("donotreply#test.com", "receiver#test.com");
Email.Subject = "RE: Hello World.";
Email.Body = "Hello World";
Email.IsBodyHtml = false;
SmtpClient Client = new SmtpClient(SMTP_SERVER); //This will be an IP address
Client.Send(Email);
Hope that helps! :)
(Btw, I've used this in Winforms, windows services, and ASP .NET. In ASP .NET I didn't need to supply anything in the aspx page.)