CODEWITHSUNDEEP
c#asp.netemailsmtpsmtpclient
Nanji Mange
Nanji Mange

Reputation: 2265

Server busy, closing transmission channel. Try again later while sending mail in ASP.NET

I want to send mail. I have following code which was working perfectly. But since few days, I am getting following error.

Error: Service not available, closing transmission channel. The server response was: Server busy, closing transmission channel. Try again later

Code:

try
{
    ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate);
    using (MailMessage mm = new MailMessage("[email protected]", "[email protected]"))
    {
        mm.Subject = "Registration Successfully";
        mm.Body = "You are registered successfully. Welcome.";
        mm.IsBodyHtml = false;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.gmail.com";
        smtp.EnableSsl = true;
        NetworkCredential NetworkCred = new NetworkCredential("[email protected]", "password");
        smtp.UseDefaultCredentials = true;
        smtp.Credentials = NetworkCred;
        smtp.Port = 587;
        smtp.Send(mm);
    }
}
catch (Exception)
{
    throw;
}

I have read following blogs and tried but didnt work.

1- Email alerts -while sending mail to multiple user 1 by 1 getting error as server busy

2- Send Bulk Email From Yahoo and Hotmail Using ASP.Net

Upvotes: 0

Views: 820

Answers (1)

Genish Parvadia
Genish Parvadia

Reputation: 1455

don't use SMTP smtp.gmail.com some times create problem

best solution 

        mm.Subject = "Registration Successfully";
        mm.Body = "You are registered successfully. Welcome.";
        mm.IsBodyHtml = false;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "domainname.com";
        smtp.EnableSsl = true;
        NetworkCredential NetworkCred = new NetworkCredential("[email protected]", "password");
        smtp.UseDefaultCredentials = true;
        smtp.Credentials = NetworkCred;
        smtp.Port = 587;
        smtp.Send(mm);

Upvotes: 0

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