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• How to send email from an EC2 instance using GoDaddy's SMTP server?

  - by Matt Greer

  SMTP is a whole new ballgame for me, but I am reading up on it. I am attempting to send email from my EC2 instance using GoDaddy's SMTP server. My domain name is registered through GoDaddy and I have 2 email accounts with them. I can successfully send the email from my dev box no problem. my web.config <system.net> <mailSettings> <smtp from="[email protected]" deliveryMethod="Network"> <network host="smtpout.secureserver.net" clientDomain="mydomain.com" port="25" userName="[email protected]" password="mypassword" defaultCredentials="false" /> </smtp> </mailSettings> </system.net> In my ASP.NET app: MailMessage mailMessage = new MailMessage("[email protected]", recipientEmail, emailSubject, body); mailMessage.IsBodyHtml = false; SmtpClient mailClient = new SmtpClient(); mailClient.Send(mailMessage); Very typical, simple use of System.Net.Mail.SmtpClient. The mail client is picking up the settings from my web.config as expected. From the EC2 instance, the same setup yields: System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed. at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine) at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine) at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller) at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpClient.Send(MailMessage message) --- End of inner exception stack trace --- I have searched high and low and not found anyone else attempting this. All GoDaddy smtp situations I have found involve people being hosted by GoDaddy using their relay server. Some more info: My EC2 instance is Windows Server 2008 with IIS 7. The app is running in .NET 4 I can successfully use Gmail's SMTP server on the EC2 instance by using their port, setting SmtpClient.EnableSsl to true, and sending the mail through a gmail account. But we want to send the email from an account on our domain. I have port 25 open on both the Windows firewall and Amazon's Security group based firewall. I have played with Wireshark and noticed my SMTP related traffic was talking to ports in the 5,000s, so out of desperation I opened them all up to no avail (then closed them back down) As far as I know my EC2 instance's IP address is not black listed by GoDaddy. I have a feeling I'm just missing something fundamental. I also have a feeling someone is going to recommend I use AuthSmtp or something similar, I'll agree, and have had wasted the past 6 hours :)

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• Gmail: How to send an email programmatically

  - by Clint

  Possible Exact Duplicate: Sending Email in C#.NET Through Gmail Hi, I'm trying to send an email using gmail: I tried various examples that I found on this site and other sites but I always get the same error: Unable to connect to the remote server -- System.net.Sockets.SocketException: No connection could be made because the target actively refused it 209.85.147.109:587 public static void Attempt1() { var client = new SmtpClient("smtp.gmail.com", 587) { Credentials = new NetworkCredential("[email protected]", "MyPassWord"), EnableSsl = true }; client.Send("[email protected]", "[email protected]", "test", "testbody"); } Any ideas? UPDATE More details. Maybe I should say what other attempts I made that gave me the same error: (Note when i didn't specify a port it tryed port 25) public static void Attempt2() { var fromAddress = new MailAddress("[email protected]", "From Name"); var toAddress = new MailAddress("[email protected]", "To Name"); const string fromPassword = "pass"; 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); } } public static void Attempt3() { MailMessage mail = new MailMessage(); mail.To.Add("[email protected]"); mail.From = new MailAddress("[email protected]"); mail.Subject = "Email using Gmail"; string Body = "Hi, this mail is to test sending mail" + "using Gmail in ASP.NET"; mail.Body = Body; mail.IsBodyHtml = true; SmtpClient smtp = new SmtpClient(); smtp.Host = "smtp.gmail.com"; smtp.Credentials = new System.Net.NetworkCredential ("[email protected]", "pass"); smtp.EnableSsl = true; smtp.Send(mail); }

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• ASP.NET-MVC Page: image logo is not displaying while sending the email

  - by Rita

  Hi I have a page that sends an email on ASP.NET MVC Page. All the Text is displaying but the image is not displaying. Any workaround. Appreciate your responses. Here is my code: MailMessage mailMsg = new MailMessage(); mailMsg.IsBodyHtml = true; mailMsg.From = new MailAddress(ConfigurationManager.AppSettings["Email.Sender"]); mailMsg.To.Add(new MailAddress(email)); mailMsg.Subject = "Test mail to display the Logo in the email"; mailMsg.Body = " Test mail to display the Logo in the email; mailMsg.Body += Environment.NewLine + Environment.NewLine + "<html><body><img src=cid:companylogo/><br></body></html>"; //Insert Logo string logoPath = Server.MapPath(Links.Content.images.Amgen_MedInfo_Logo_jpg); // logo is placed in images folder LinkedResource logo = new LinkedResource(logoPath); logo.ContentId = "companylogo"; // done HTML formatting in the next line to display logo AlternateView aView = AlternateView.CreateAlternateViewFromString(mailMsg.Body, new System.Net.Mime.ContentType("text/html")); aView.LinkedResources.Add(logo); mailMsg.AlternateViews.Add(aView); mailMsg.IsBodyHtml = true; SmtpClient smtpClient = new SmtpClient(ConfigurationManager.AppSettings["SMTP"]); smtpClient.Send(mailMsg);

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• sendmail function shows:Syntax error, command unrecognized. The server response was:

  - by Ranjana

  while sending mail from particular id i get this error,for rest of all id's its working fine, wat was the prob over here.. Syntax error, command unrecognized. The server response was: status code :0 stack trace: at System.Net.Mail.SmtpConnection.ConnectAndHandshakeAsyncResult.End(IAsyncResult result) at System.Net.Mail.SmtpClient.ConnectCallback(IAsyncResult result) Brief: System.Net.Mail.SmtpException: Syntax error, command unrecognized. The server response was: at System.Net.Mail.SmtpConnection.ConnectAndHandshakeAsyncResult.End(IAsyncResult result) at System.Net.Mail.SmtpClient.ConnectCallback(IAsyncResult result) pls help me out..

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• 1&1 web hosting and smtp configuration

  - by Alexander

  Has anyone ever tried sending emails using 1&1 smtp host? I tried the following? SmtpClient mailClient = new SmtpClient("smtp.1and1.com", 587); But it always gives me a security exemption error... I tried it using my local host and it works fine.. I tried using gmail's smtp and it worked fine as well...

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• Setting multiple SMTP settings in web.config?

  - by alphadogg

  I am building an app that needs to dynamically/programatically know of and use different SMTP settings when sending email. I'm used to using the system.net/mailSettings approach, but as I understand it, that only allows one SMTP connection definition at a time, used by SmtpClient(). However, I need more of a connectionStrings-like approach, where I can pull a set of settings based on a key/name. Any recommendations? I'm open to skipping the tradintional SmtpClient/mailSettings approach, and I think will have to...

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• smtp.Send() Issue

  - by Kumar

  I building a web application in ASP.NET 3.5 and C#. I have a method in my project which sends emails to the users. But for some reason the smtp send method is taking 3 to 4 seconds to execute: SmtpClient smtp = new SmtpClient(); smtp.Send(msg);-----> This is the line of code which takes 3 to 4 seconds to execute What could be the reasons behind this delay?

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• "The operation has timed out" when trying to send email

  - by user1718859

  protected void Button1_Click(object sender, EventArgs e) { try { SmtpClient sm = new SmtpClient(); MailMessage ms = new MailMessage(); ms.To.Add(new MailAddress(TextBox1 .Text )); ms.Subject = TextBox2.Text; ms.Body = TextBox3.Text; ms.IsBodyHtml = true; sm.Send(ms); } catch (Exception el) { Response.Write(el.Message); } }

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• Send Email via Google Apps in C#

  - by NateReid

  Hello, I am trying to send a basic email through Google Apps/Gmail using C# (System.Net.Mail/Framework 4) and I am having trouble doing so. I am receiving the following exception: "The operation has timed out." My code is below: //Create the mail message MailMessage mail = new MailMessage(); //Set the addresses mail.From = new MailAddress("[email protected]", "My Name"); mail.To.Add(Email); //Set the subject and bodycontent mail.Subject = "Email Testing"; mail.Body = "This is the body of the email"; //Send the message using the SmtpClient SmtpClient smtp = new SmtpClient(); smtp.EnableSsl = true; smtp.Send(mail); My web.config has the following settings: <smtp from="[email protected]" deliveryMethod="Network"> <network host="smtp.gmail.com" password="password" port="587" userName="[email protected]" /> </smtp> During my troubleshooting I have tried: Using my personal gmail address as well as another from a domain hosted through Google Apps. Using ports 25, 465, and 587 Hard coding the config settings in the c# code instead of using the web.config Sending and telneting from multiple network locations to ensure the firewall/ISP was not blocking it Ensured that POP was enabled in the GMail settings (according to Google this should turn on the ability to send using SMTP) Changing the send from and replyTo address to ensure they match the account (apparently a GMail necessity). I am able to send and receive email fine through the GMail interface for both of my email accounts. I have also tried the settings and solutions offered in Question # 757987 to no avail. Any suggestions would be greatly appreciated. Thanks all.

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• How to send mass email and not get treated as spam

  - by MonsterMMORPG

  I am the owner of http://www.monstermmorpg.com which is a free to play browser based monster role playing game. I have a very important announcement to send my above 300k members. I already have email sending software but they drop to the spam. So i want to improve my chances of dropping inbox. I am going to give you all details. Alright my domain registrar is : http://www.godaddy.com/ My hosting company is : http://www.leaseweb.com/en This is my setting at leaseweb: This is my DNS settings at Godaddy: This is how I send emails: MailMessage mail = new MailMessage(); mail.To.Add(EmailAdress); mail.From = new MailAddress("MonsterMMORPG NoReplay <[email protected]>"); mail.Subject = "Title Of Mail"; string Body = "Body Of Mail"; mail.Body = Body; mail.IsBodyHtml = true; SmtpClient smtp = new SmtpClient(); smtp.DeliveryMethod = SmtpDeliveryMethod.Network; smtp.UseDefaultCredentials = true; smtp.Host = "85.17.154.139"; smtp.Port = 25; smtp.Send(mail); Thanks for every kind of answer. I did not make any special setting at SMTP:

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• Why Freezing when sending email?

  - by Outlaw Lemur

  So i have a kinect program which when it detects a human, it saves images of them and sends your email a notification email, the thing is that when it sends the email, it freezes and stops running, Why does it do this? Email Notification Code: void SendNotificationEmail() { string email = textBox1.Text; string message = "Someone has been detected in your house!\n Go to www.kinected.webs.com to view your photos now!!!!"; System.Net.Mail.MailMessage emailsend = new System.Net.Mail.MailMessage(); emailsend.To.Add(email); emailsend.Subject = "There is an Intruder In Your Home!"; emailsend.From = new System.Net.Mail.MailAddress("[email protected]"); emailsend.Body = message; System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("smtp.mail.yahoo.com."); smtp.Send(emailsend); } When its supposed to fire: void nui_ColorFrameReady2(object sender, ImageFrameReadyEventArgs e) { // 32-bit per pixel, RGBA image xxx PlanarImage Image = e.ImageFrame.Image; //int deltaFrames = totalFrames - lastFrameWithMotion; //if (totalFrames2 <= stopFrameNumber & deltaFrames > 300) { ++totalFrames2; string bb1 = Convert.ToString(totalFrames2); // string file_name_3 = "C:\\Research\\Kinect\\Proposal\\Depth_Img" + bb1 + ".jpg"; xxx string file_name_4 = "C:\\temp\\Kinect1_Img" + bb1 + ".jpg"; video.Source = BitmapSource.Create( Image.Width, Image.Height, 96, 96, PixelFormats.Bgr32, null, Image.Bits, Image.Width * Image.BytesPerPixel); BitmapSource image4 = BitmapSource.Create( Image.Width, Image.Height, 96, 96, PixelFormats.Bgr32, null, Image.Bits, Image.Width * Image.BytesPerPixel); if (PersonDetected == 1) { if (totalFrames2 % 10 == 0) { image4.Save(file_name_4, Coding4Fun.Kinect.Wpf.ImageFormat.Jpeg); SendNotificationEmail(); PersonDetected = 0; // lastFrameWithMotion = totalFrames; // topFrameNumber += 100; } } } } Thanks for any help!

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• Send Multiple InMemory Attachments Using FileUpload Controls

  - by bullpit

  I wanted to give users an ability to send multiple attachments from the web application. I did not want anything fancy, just a few FileUpload controls on the page and then send the email. So I dropped five FileUpload controls on the web page and created a function to send email with multiple attachments. Here’s the code: public static void SendMail(string fromAddress, string toAddress, string subject, string body, HttpFileCollection fileCollection)     {         // CREATE THE MailMessage OBJECT         MailMessage mail = new MailMessage();           // SET ADDRESSES         mail.From = new MailAddress(fromAddress);         mail.To.Add(toAddress);           // SET CONTENT         mail.Subject = subject;         mail.Body = body;         mail.IsBodyHtml = false;                        // ATTACH FILES FROM HttpFileCollection         for (int i = 0; i < fileCollection.Count; i++)         {             HttpPostedFile file = fileCollection[i];             if (file.ContentLength > 0)             {                 Attachment attachment = new Attachment(file.InputStream, Path.GetFileName(file.FileName));                 mail.Attachments.Add(attachment);             }         }           // SEND MESSAGE         SmtpClient smtp = new SmtpClient("127.0.0.1");         smtp.Send(mail);     } And here’s how you call the method: protected void uxSendMail_Click(object sender, EventArgs e)     {         HttpFileCollection fileCollection = Request.Files;         string fromAddress = "[email protected]";         string toAddress = "[email protected]";         string subject = "Multiple Mail Attachment Test";         string body = "Mail Attachments Included";         HelperClass.SendMail(fromAddress, toAddress, subject, body, fileCollection);            }

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• .NET and SMTP Configuration

  - by koevoeter

  Sometimes I feel stupid about discovering .NET features that have been there since an old release (2.0 in this case)... Apparently you can just use this configSecion “mailSettings” and never have to configure your SmtpClient instance in code again (no, not hard-coded): <system.net>     <mailSettings>         <smtp deliveryMethod="Network" from="My Display Name &lt;[email protected]&gt;">             <network host="mail.server.com" />         </smtp>     </mailSettings> </system.net> Now you can go all like: new SmtpClient().Send(mailMessage); …and everything is configured for you, even the from address (which you can obviously override).

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• Send mail via gmail with PowerShell V2's Send-MailMessage

  - by Scott Weinstein

  I'm trying to figure out how to use PowerShell V2's Send-MailMessage with gmail. Here's what I have so far. $ss = new-object Security.SecureString foreach ($ch in "password".ToCharArray()) { $ss.AppendChar($ch) } $cred = new-object Management.Automation.PSCredential "[email protected]", $ss Send-MailMessage -SmtpServer smtp.gmail.com -UseSsl -Credential $cred -Body... I get the following error Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at At foo.ps1:18 char:21 + Send-MailMessage <<<< ` + CategoryInfo : InvalidOperation: (System.Net.Mail.SmtpClient:SmtpClient) [Send-MailMessage], SmtpException + FullyQualifiedErrorId : SmtpException,Microsoft.PowerShell.Commands.SendMailMessage Am I doing something wrong, or is Send-MailMessage not fully baked yet (I'm on CTP 3)? Edit - two additional restrictions I want this to be non-interactive, so get-credential won't work The user account isn't on the gmail domain, but an google apps registered domain

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• how do i solve this error:“smtpException was unhandled by user code”

  - by wide

  here is the code. void sendMail() { MailMessage mail = new MailMessage(); mail.To.Add("[email protected]"); mail.From = new MailAddress("[email protected]", txt_name.Text); mail.Subject = txt_subject.Text; mail.Body = txt_body.Text; SmtpClient smtp = new SmtpClient("smtp.gmail.com"); smtp.EnableSsl = true; NetworkCredential yetki = new NetworkCredential("[email protected]", "11111111"); smtp.Credentials = yetki; smtp.Send(mail); Response.Write("mailiniz basarili bir sekilde gönderilmistir"); } protected void btn_gonder_Click(object sender, EventArgs e) { sendMail(); }

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• Unable to send smtp emails in C# with a VMware vm of win 7

  - by Egon

  the VMware is able to ping the gmail server. sample code MailMessage mail = new MailMessage(); SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com"); mail.From = new MailAddress("[email protected]"); mail.To.Add("to"); mail.Subject = "subjct"; mail.Body = "email body!!"; System.Net.Mail.Attachment attachment; attachment = new System.Net.Mail.Attachment("filename.extension"); mail.Attachments.Add(attachment); SmtpServer.Port = 587; SmtpServer.Credentials = new System.Net.NetworkCredential("email id", "password"); SmtpServer.EnableSsl = true; SmtpServer.Send(mail); I have got it has something to do with ports being open on vmware some networking issue, but i just can't put a finger on it. Please let know what it is that i am doing wrong. Thnx - Egon

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• SMTP error: "Client does not have permission to submit mail to this server"

  - by Raj Kumar

  I'm getting the following error while sending email. What could be the cause? Client does not have permission to submit mail to this server. The server response was: 5.5.1 STARTTLS may not be repeated. Here's the stack trace... Stack Trace at System.Net.Mail.StartTlsCommand.CheckResponse(SmtpStatusCode statusCode, String response) at System.Net.Mail.StartTlsCommand.Send(SmtpConnection conn) at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message) I'm connecting to smtp.gmail.com with SSL on port 587 / 465

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• Trying to access App.config file for mail settings but fails to work.

  - by mw

  Hello we have a Business Logic Layer which has an Email Services Class. In this class we have a method which will create an email(This part works and compiles fine). However when we try to access the app config file in order to test the method we get an error saying - Can't retrieve the app config mail settings and says all values are null when they are not. Here is the app config section for our code: <mailSettings> <smtp deliveryMethod="Network" from="[email protected]"> <network host="localhost" port="25" defaultCredentials="true"/> </smtp> </mailSettings> Here is there code we use to connect to the app.config: private System.Net.Configuration.MailSettingsSectionGroup mailSettings; SmtpClient client = new SmtpClient(mailSettings.Smtp.Network.Host, mailSettings.Smtp.Network.Port); What are we doing wrong here?

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• error with Security Exception

  - by Alexander

  I am getting the following error on my page: Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. The problem is with the following code SmtpClient mailClient = new SmtpClient("smtp.gmail.com", 587); What's weird is that when testing it at my localhost, everything works fine, but when I put it on my 1and1 web host it generates the error above. I contacted their support and here's their answer. We do check the error logs and the operation require a FullTrust environment which currently fall under restriction on .NET Framewor k What should I do?

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• code to send email

  - by Alexander

  What am I doing wrong here? private void SendMail(string from, string body) { string mailServerName = "plus.pop.mail.yahoo.com"; MailMessage message = new MailMessage(from, "[email protected]", "feedback", body); SmtpClient mailClient = new SmtpClient(); mailClient.Host = mailServerName; mailClient.Send(message); message.Dispose(); } I got the following error: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 209.191.108.191:25

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• Unable to send email using 3rd party server ( IIS 7, Windows Server 2008, ASP.NET )

  - by Reed

  Hello All, I am using IIS 7 on Server 2008. I just tried migrating my app from an older platform - everything works fine, except the email feature. This is my config: < mailSettings > < smtp from="[email protected]" deliveryMethod="Network" > < network host="mail.xyz.com" port="25" userName="[email protected]" password="123" /> < / smtp > < /mailSettings > Whenever I need to send an email I use: SmtpClient smtp = new SmtpClient(); smtp.Send(email); The funny thing is I get absolutely no errors, however the email is never sent. The outbound firewall ruleset allows SMTP traffic. Any idea what I did wrong?

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• Is there way to see if System.Net.Mail worked

  - by eski

  I'm using System.Net.Mail to send email, like so : MailMessage message = new MailMessage(); message.From = new MailAddress("[email protected]"); message.To.Add(new MailAddress("[email protected]")); message.Subject = "Hello"; message.Body = "This is a nice body.."; SmtpClient client = new SmtpClient(); client.Send(message); How can i know if the E-mail was sent, can i put in a if sentence to check it out ? What would it look like then ?

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• Email goes to spam

  - by VICKY Shastri

  i am creating an simple mail sending application in c# windows form application. My application works well but when i send email to my yahoo account it goes to spam not in inbox but if i send email to gmail it goes to inbox. please tell me what i need to do to send email in inbox below is my code: try { // setup mail message MailMessage message = new MailMessage(); message.From = new MailAddress(textBox1.Text); message.To.Add(new MailAddress(textBox2.Text)); message.Subject = textBox3.Text; message.Body = richTextBox1.Text; // setup mail client SmtpClient mailClient = new SmtpClient("smtp.mail.yahoo.com"); mailClient.Credentials = new NetworkCredential(textBox1.Text, "password"); // send message mailClient.Send(message); MessageBox.Show("Sent"); } catch(Exception) { MessageBox.Show("Error"); }

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• send smtp email through godaddy

  - by Danni

  So, I'm trying to send an smtp email from my website as a confirmation that their order has been place. The site is hosted on godaddy and I have no idea what's going on. I'm getting all kinds of error messages. The current one is: "System.Net.Mail.SmtpException: Mailbox name not allowed. The server response was: sorry, your mail was administratively denied. (#5.7.1)" My code is: string body = "Your order was placed"; MailMessage objEmail1 = new MailMessage("[email protected]", userEmail, "Confirmation Email", body); objEmail1.IsBodyHtml = true; SmtpClient client = new SmtpClient(); client.Host = "relay-hosting.secureserver.net"; client.UseDefaultCredentials = false; client.Send(objEmail1); I think the problem lies in the from address not belonging to godaddy or with the client.Host. Ideas?

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• Sending SMTP e-mail at a high rate in .NET

  - by Martin Liversage

  I have a .NET service that processes a queue on a background thread and from the items in the queue sends out a large number of small e-mail messages at a very high rate (say 100 messages per second if that is even possible). Currently, I use SmtpClient.Send() but I'm afraid that it may hamper performance. Each call to Send() goes through a full cycle of opening the socket, performing the SMTP conversation (HELO, MAIL FROM, RCPT TO, DATA) and closing the socket. In pseudo code: for each message { open socket send HELO send MAIL FROM send RCPT TO send DATA close socket } I would think that the following pseudo code would be more optimal: open socket send HELO for each message { send MAIL FROM send RCPT TO send DATA } send QUIT close socket Should I be concerned about the performance of SmtpClient.Send() when sending e-mail at a high rate? What are my options for optimizing the performance?

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