Send email via asp.net throw exception

Question

I wrote this code in asp.net for sending email:

MailMessage mailObject = new MailMessage("a@b.com(I use fake email, exactly this email)", "info@mydomain.com", "contact us", "Test message");
SmtpClient smtpC = new SmtpClient("my smtp server name");
smtpC.Send(mailObject);

But I receive this exception:

System.Net.Sockets.SocketException: 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

Also I can not connect to my "smpt server name" via tel net:

telnet SMTPServerName 25 Connecting To SMTPServerName...Could not open connection to the host, on port 25: Connect failed

Is there any standard for troubleshooting this?

Did you try to send a test smtp message from the "manage" option near IIS ? — JonH, Oct 31 '12 at 12:32
Have you tested the smtp server hostname with telnet? http://www.yuki-onna.co.uk/email/smtp.html — JP Hellemons, Oct 31 '12 at 12:35
Have you overwriten smtp settings in your web.config? like this: http://stackoverflow.com/questions/2767450/how-does-my-asp-net-app-get-the-smtp-settings-automatically-from-web-config — JP Hellemons, Oct 31 '12 at 12:38
telnet SMTPServerName 25 Connecting To SMTPServerName...Could not open connection to the host, on port 25: Connect failed — Masoud Keshavarz, Oct 31 '12 at 12:51

score 2 · Accepted Answer · answered Oct 31 '12 at 12:34

2

Most likely the server name or port is incorrect. Make sure you can send from an SMTP client before troubleshooting further in your code.

answered Oct 31 '12 at 12:34

Jon B

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agree, check your smtp server first. – VicoMan Oct 31 '12 at 12:35
I really dont know how to do that – Masoud Keshavarz Oct 31 '12 at 12:36
@masoudkeshavarz - if you don't know how to configure an email client, you can ask at http://superuser.com/ – Jon B Oct 31 '12 at 12:37

Send email via asp.net throw exception

1 Answers1