hi,
I am  trying to send email but getting this exception:
Command parameter not implemented. The server response was: : Helo command rejected: need fully-qualified hostname

The exceptin occur when i call the send() funtion

Any idea why?

Your code isn't sending your FQDN.  Post your code or see systemnetmail.com.

Jeff

public static void sendEmail(string fromEmail,string body,bool isHtml)
{
MailMessage mail = new MailMessage();
mail.From = new MailAddress(me@test.net);
mail.To.Add(asp.csharp@gmail.com);
mail.Subject = "New email form the site " + setting.getConfig("siteUrl");
mail.Body = body;
mail.IsBodyHtml = isHtml;
SmtpClient smtp = new SmtpClient();
try
{
smtp.Send(mail);
}
catch (Exception ex)
{
HttpContext.Current.Response.Write(ex.Message + "<hr>");
HttpContext.Current.Response.Write(ex.StackTrace+ "<hr>");
HttpContext.Current.Response.Write(ex.InnerException + "<hr>");
}
}

what is FQDN?

TIA

danh74:

Helo command rejected: need fully-qualified hostname

Hi danh74,

Base on my experience, you can try the following steps to solve your problem:

1. Get the properties for your mail server;
2. Next click the tab;
3. Network Identification;
4. Click the properties button;
5. Under Computer name specify the HOST / Computer (example; mail);
6. Next click the More button;
7. Where it says, "Primary DNS suffix of this computer;
8. Enter your primary domain name(example;youdomain.com);
9. Click OK and OK again;
10. Restart your mail server.

Now you can get the whole mail server name is: mail.youdomain.com.

Please correct me if I have misunderstood your mean, please LET ME KNOW, Thanks, 

Hope it helps,

Hong Gang

Hi ,

Thanks for replying,
I am not sure i understand you.

I do not have access to the mail server, i only have it's IP

danh74:

Thanks for replying,
I am not sure i understand you.I do not have access to the mail server, i only have it's IP

Do you have any email acount in that IP?

Waiting for your feedback,

Hong Gang

I do not have email account in the IP.
I am trying to send email to my account in gmail danh74@gmail.com 

The IP of the email server is "sendmail4.brinkster.com"

Thanks

danh74:

I am trying to send email to my account in gmail danh74@gmail.com 

Hi danh74,

Base on my understating, Gmail has their own SMTP-smtp.gmail.com.

And you can use the following code snippet to solve your problem:

//This is fully working tested code. Copy and paste the code
//Edit some parts(UserName, password) and ENJOY!
public string sendMail (string from, string to, string cc, string bcc, string subject, string body) {
    // Mail initialization
    MailMessage mailMsg = new MailMessage();
    mailMsg.From = from;
    mailMsg.To = to;
    mailMsg.Cc = cc;
    mailMsg.Bcc = bcc;
    mailMsg.Subject = subject;
    mailMsg.BodyFormat = MailFormat.Text;
    mailMsg.Body = body;
    mailMsg.Priority = MailPriority.High;
    // Smtp configuration
    SmtpMail.SmtpServer = "smtp.gmail.com";
    // - smtp.gmail.com use smtp authentication
    mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
    mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "myemail@gmail.com");
    mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "mypassword");
    // - smtp.gmail.com use port 465 or 587
    mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", "465");
    // - smtp.gmail.com use STARTTLS (some call this SSL)
    mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true");
    // try to send Mail
    try
    {
        SmtpMail.Send(mailMsg);
        return "";
    }
    catch (Exception ex)
    {
        return ex.Message;
    }
}

More information, please visit this link: http://www.codeproject.com/useritems/SendMailUsingGmailAccount.asp

Hope it helps,

Hong Gang