I M Using Smtp In .Net For Mail Sending. It Is Working Properly At My Home.Bt In Office There Is Proxy Server For Domain So What I Have To Change In Code.

Question

1.00/5 (1 vote)

See more:

Hi,
I m using smtp in .net for mail sending. it is working properly at my home.bt in office there is proxy server for domain so what i have to change in code.
The code below is not working in my office.I have already change "smtp.mycompany.com" and pot to 8080 but it is not working.

C#

string SMTPSERVER = "smtp.gmail.com"
int PORTNO =25;
SmtpClient smtpClient = new SmtpClient(SMTPSERVER, PORTNO);
smtpClient.EnableSsl = true;
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
smtpClient.UseDefaultCredentials = false;
//smtpClient.Timeout = 1500000000;
smtpClient.Timeout = int.MaxValue;
smtpClient.Credentials = new NetworkCredential(gmailUserName, gmailUserPassword);
using (MailMessage message = new MailMessage())
{
    message.From = new MailAddress(gmailUserName);
    message.Subject = subject == null ? "" : subject;
    message.Body = body == null ? "" : body;
    message.IsBodyHtml = isBodyHtml;

    foreach (string email in emailToAddress)
    {
        message.To.Add(email);
    }
    if (ccemailTo != null && ccemailTo.Count > 0)
    {
        foreach (string emailCc in ccemailTo)
        {
            message.CC.Add(emailCc);
        }
    }

    foreach (string str in LstAttachment)
    {
        message.Attachments.Add(new Attachment(str));
    }

    try
    {
        smtpClient.Send(message);
        return "Email Send SuccessFully";
    }
    catch (TimeoutException ex)
    {
        Thread.Sleep(5000);
        try
        {
            smtpClient.Send(message);
            return "Email Send SuccessFully";
        }
        catch
        {
            return "Email Send failed";
        }
    }
    catch (Exception e)
    {
        return "Email Send failed";
    }
    
}

If anybody have solution then plz help me.

Thanks.

[Edit member="Tadit"]
Corrected formatting and/or grammatical issues.
Added pre tags.
[/Edit]

Posted 13-Oct-14 1:17am

nidhi86

Updated 13-Oct-14 2:20am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

Add a Solution

Comments

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Oct-14 8:19am

What is the exception message?

nidhi86 13-Oct-14 13:19pm

some times timeout exception and some times simple smtp exception.

Nandakishore G N 13-Oct-14 10:37am

It is not the problem of your code. You contact your admin to allow/give access for you to send mail or host your application in server and check, it'll work.

nidhi86 13-Oct-14 13:17pm

thanks for Your reply.
and one more thing I want to ask when I attach a file size of 4 or 5 mb this code sends attached file successfully but time out exception occurred and when attach file size of 1 mb then it works properly without any exception. What changes I have to do?

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Oct-14 13:40pm

First of all, make sure that your Email provider allows large files as attachment or not. You can test with Gmail first. Gmail allows upto 25 MB.

One question... How are you reading the file? Are you loading the file to MemoryStream?

nidhi86 13-Oct-14 13:48pm

ya I m using gmail for attachment but it throws timeout exception. I m not using memory stream I m just attaching a file in my silverlight page and passing path of that file to wcf code that mention above.
below is my silverlight page code

private void btn_browse_Click_1(object sender, RoutedEventArgs e)
{
//lstattachment = new List<string>();
if (Application.Current.HasElevatedPermissions)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();

// Set filter options and filter index.
openFileDialog1.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
openFileDialog1.FilterIndex = 1;

openFileDialog1.Multiselect = true;

// Call the ShowDialog method to show the dialog box.
bool? userClickedOK = openFileDialog1.ShowDialog();
if (userClickedOK == true)
{
if (openFileDialog1.Files.Count() > 0)
{
foreach (var v in openFileDialog1.Files)
{
lst_boxAttachment.Items.Add(v.FullName);
lstattachment.Add(v.FullName);
}
}
}
}

}
private void Btnsend_Click(object sender, RoutedEventArgs e)
{
if (CheckValidation())
{
List<string> lst_IdTosend = new List<string>();
lst_IdTosend.Add(this.TxtIDtosend.Text.ToString());
List<string> lst_CCId = new List<string>();
lst_CCId.Add(this.TxtCCId.Text.ToString());

ServiceReference2.S1Client s = new ServiceReference2.S1Client();
s.SendEmailCompleted +=s_SendEmailCompleted;
//s.SendEmailCompleted += s_SendEmailCompleted;

s.SendEmailAsync(this.TxtId.Text.ToString(), this.PdBox.Password.ToString(), lst_IdTosend, lst_CCId, this.TxtSub.Text.ToString(), this.TxtBody.Text.ToString(), true,lstattachment);
}
}

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Oct-14 14:44pm

Try using MemoryStream. Load everything to memory then attach and send.

Nandakishore G N 14-Oct-14 1:26am

Nidhi, Try to change web.config in
system.web -> httpruntime executiontimeout="900000" (give maximum in seconds) maxrequestlength="1048576" (in kb)
because, asp.net allows only 4MB max by default.

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)