Error sending mail using gmails smtp server

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Hi,

When trying to send an email using gmails SMTP server I get the following error:

"Service not available, closing transmission channel. The server response was: Cannot connect to SMTP server 173.194.67.108 (173.194.67.108:587), connect timeout"

My code is as follows:

C#

System.Net.Mail.MailMessage email = new System.Net.Mail.MailMessage();

                email.To.Add(new MailAddress("User_To"));
                email.From = new MailAddress("User_From");
                email.Subject = "Question";
                email.Body = "Boody";

                SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
                client.EnableSsl = true;
                client.DeliveryMethod = SmtpDeliveryMethod.Network;

                client.UseDefaultCredentials = false;
                client.Credentials = new NetworkCredential("myGmailAccountEmail", "myGmailAccountPassword");
                client.Send(email);

Posted 7-Feb-12 23:25pm

biki66

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Herman<T>.Instance 8-Feb-12 5:28am

did you read this?

biki66 8-Feb-12 5:34am

Yeah I found the article helpful but this is when i first got the error. I just tried pinging gmails smtp server from comand prompt which timed out so feel this is what is causing my error in code.

Richard MacCutchan 8-Feb-12 6:19am

It seems that you do not have a network connection for some reason. I can connect to the smtp server from my home PC with no problems.

4 solutions

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Bojjaiah · Answer 1 · 2012-02-07T23:29:00

C#

MailAddress mailfrom = new MailAddress ( "frommail@gmail.com" );
            MailAddress mailto = new MailAddress ( "tomail@gmail.com" );
            MailMessage newmsg = new MailMessage ( mailfrom, mailto );

            newmsg.Subject = "Subject of Email";
            newmsg.Body = "Body(message) of email";

            ////For File Attachment, more file can also be attached

            //Attachment att = new Attachment ( "G:\\code.txt" );
            //newmsg.Attachments.Add ( att );

            SmtpClient smtps = new SmtpClient ( "smtp.gmail.com", 587 );
            smtps.UseDefaultCredentials = false;
            smtps.Credentials = new NetworkCredential ( "mail@gmail.com", "pwd" );
            smtps.EnableSsl = true;
            smtps.Send ( newmsg );

Sanjay K. Gupta · Answer 2 · 2012-02-08T00:21:00

Solution 2

use

C#

SmtpClient client = new SmtpClient("smtp.gmail.com");

instead of

C#

SmtpClient client = new SmtpClient("smtp.gmail.com", 587);

Posted 8-Feb-12 0:21am

Sanjay K. Gupta

Mukund Thakker · Answer 3 · 2012-02-08T00:24:00

Solution 3

Please check the following url,

Send mail using Google Apps[^]

If you are sending email from gmail or google apps than all sent email would be store in the sent items of the gmail.
Hope this may help you...

Posted 8-Feb-12 0:24am

Mukund Thakker

biki66 · Answer 4 · 2012-02-08T01:04:00

Solution 4

Hi,

Thanks all for your posts, I have resolved this for now by using a SMTP server but I believe the issue to be network related as a friend is able to ping the server from his machine.

Posted 8-Feb-12 1:04am