I have created the following simple ASP.NET 4.0 application to test sending an e-mail:
MailTestPage.aspx
----------------------
<%@ Page Language="C#" Debug="true" AutoEventWireup="true" CodeFile="MailTestPage.aspx.cs" Inherits="MailTestPage" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table border="0">
<tr>
<td><b>Your Email:</b></td>
<td><asp:TextBox runat="server" ID="UsersEmail" Columns="30"></asp:TextBox></td>
</tr>
<tr>
<td><b>Subject:</b></td>
<td><asp:TextBox runat="server" ID="Subject" Columns="30"></asp:TextBox></td>
</tr>
<tr>
<td colspan="2">
<b>Body:</b><br />
<asp:TextBox runat="server" ID="Body" TextMode="MultiLine" Columns="55" Rows="10"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button runat="server" ID="SendEmail" Text="Send E-mail"
onclick="SendEmail_Click" />
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
MailTestPage.aspx.cs
-------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.Mail;
public partial class MailTestPage : System.Web.UI.Page
{
protected void SendEmail_Click(object sender, System.EventArgs e)
{
const string ToAddress = "emerald77@att.net";
MailMessage mm = new MailMessage(UsersEmail.Text, ToAddress);
mm.Subject = Subject.Text;
mm.Body = Body.Text;
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
//(use the Web.config settings)
smtp.Send(mm);
}
}
web.config
-------------
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.net>
<mailSettings>
<smtp deliveryMethod="Network">
<network host="localhost" port="25"/>
</smtp>
</mailSettings>
</system.net>
</configuration>
After I create the e-mail message and click the "Send E-mail" button, it takes about 15 seconds before smtp4dev displays the following Session log:
220 localhost smtp4dev ready
EHLO mickey
250-Nice to meet you.
250-8BITMIME
250-STARTTLS
250-AUTH=CRAM-MD5 PLAIN LOGIN ANONYMOUS
250-AUTH CRAM-MD5 PLAIN LOGIN ANONYMOUS
250 SIZE
MAIL FROM:<test@domain.com>
250 Okey dokey
RCPT TO:<emerald77@att.net>
250 Recipient accepted
RSET
However, the e-mail message does not show up under the "Messages" tab of smtp4dev. I'm not sure if the problem is due to pilot error or there is a bug in smtp4dev.
Thanks in advance for any assistance with this issue.
Bob
Comments: ** Comment from web user: ayitey **
MailTestPage.aspx
----------------------
<%@ Page Language="C#" Debug="true" AutoEventWireup="true" CodeFile="MailTestPage.aspx.cs" Inherits="MailTestPage" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table border="0">
<tr>
<td><b>Your Email:</b></td>
<td><asp:TextBox runat="server" ID="UsersEmail" Columns="30"></asp:TextBox></td>
</tr>
<tr>
<td><b>Subject:</b></td>
<td><asp:TextBox runat="server" ID="Subject" Columns="30"></asp:TextBox></td>
</tr>
<tr>
<td colspan="2">
<b>Body:</b><br />
<asp:TextBox runat="server" ID="Body" TextMode="MultiLine" Columns="55" Rows="10"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button runat="server" ID="SendEmail" Text="Send E-mail"
onclick="SendEmail_Click" />
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
MailTestPage.aspx.cs
-------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.Mail;
public partial class MailTestPage : System.Web.UI.Page
{
protected void SendEmail_Click(object sender, System.EventArgs e)
{
const string ToAddress = "emerald77@att.net";
MailMessage mm = new MailMessage(UsersEmail.Text, ToAddress);
mm.Subject = Subject.Text;
mm.Body = Body.Text;
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
//(use the Web.config settings)
smtp.Send(mm);
}
}
web.config
-------------
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.net>
<mailSettings>
<smtp deliveryMethod="Network">
<network host="localhost" port="25"/>
</smtp>
</mailSettings>
</system.net>
</configuration>
After I create the e-mail message and click the "Send E-mail" button, it takes about 15 seconds before smtp4dev displays the following Session log:
220 localhost smtp4dev ready
EHLO mickey
250-Nice to meet you.
250-8BITMIME
250-STARTTLS
250-AUTH=CRAM-MD5 PLAIN LOGIN ANONYMOUS
250-AUTH CRAM-MD5 PLAIN LOGIN ANONYMOUS
250 SIZE
MAIL FROM:<test@domain.com>
250 Okey dokey
RCPT TO:<emerald77@att.net>
250 Recipient accepted
RSET
However, the e-mail message does not show up under the "Messages" tab of smtp4dev. I'm not sure if the problem is due to pilot error or there is a bug in smtp4dev.
Thanks in advance for any assistance with this issue.
Bob
Comments: ** Comment from web user: ayitey **
I had the same problem, but in my environment, I do not have permission to disable Symantic Internet Email Auto-Protect. (Lame!)
However, an easy workaround is to change the port configuration in SMTP4DEV, so it is not listening on the standard SMTP port 25. I changed it to a different port, and changed the port on the configuration of the application that needs to send email to use the same port.
Thus, Symantec doesn't recognize this as an SMTP communication, and everything works correctly.