smtpclient

I am using my Gmail account and smtp.gmail.com inside my web application to test and send email. when two factor authentication is ON for my Gmail account, it fails to send the email, however when I turn off two factor authentication for my Gmail account, the web application sends email successfully. Appreciate any kind of advice. Create a custom app in you Gmail security settings. 1. Log-in into Gmail with your account 2. Navigate to https://security.google.com/settings/security/apppasswords 3. In 'select app' choose 'custom', give it an arbitrary name and press generate 4. It will give you

here is my code for(int i = 0; i < number ; i++) { MailAddress to = new MailAddress(iMail.to); MailAddress from = new MailAddress(iMail.from, iMail.displayName); string body = iMail.body; string subject = iMail.sub; oMail = new MailMessage(from, to); oMail.Subject = subject; oMail.Body = body; oMail.IsBodyHtml = true; oMail.Priority = MailPriority.Normal; oMail.Sender = from; s = new SmtpClient(smtpServer); if (s != null) { s.Send(oMail); } oMail.Dispose(); s = null; } this loops sends over 60,000 email. but my problem i am getting " failure sending mail" in some of the email some times 5000

I'm developing a mail client for a school project. I have managed to send e-mails using the SmtpClient in C#. This works perfectly with any server but it doesn't work with Gmail. I believe it's because of Google using TLS. I have tried setting EnableSsl to true on the SmtpClient but this doesn't make a difference. This is the code I am using to create the SmtpClient and send an e-mail. this.client = new SmtpClient("smtp.gmail.com", 587); this.client.EnableSsl = true; this.client.UseDefaultCredentials = false; this.client.Credentials = new NetworkCredential("username", "password"); try { //

I see different versions of the constructor, one uses info from web.config, one specifies the host, and one the host and port. But how do I set the username and password to something different from the web.config? We have the issue where our internal smtp is blocked by some high security clients and we want to use their smtp server, is there a way to do this from the code instead of web.config? In this case how would I use the web.config credentials if none is available from the database, for example? public static void CreateTestMessage1(string server, int port) { string to = "jane@contoso

I am getting an error when trying to send an e-mail through my web service. I have tried enabling access to less secure apps disabling 2-step verification and logging into the account via a web browser. None of the solutions on SO have worked for me. I am still getting: Error: System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. What can I do to fix this issue? namespace EmailService { public class Service1 : IService1 { public string SendEmail(string inputEmail, string subject,