smtp4dev

Reviewed: smtp4dev 2.0.9 (Apr 16, 2012)

arongo — Mon, 16 Apr 2012 18:24:45 GMT

Rated 5 Stars (out of 5) - Works perfectly with no setup required. Just run the exe and send email to localhost, and it just works! Fantastic!

Commented Issue: Same problem as Issue # 6080 with smtp4dev v2.0.9. [7512]

spongeboy — Tue, 10 Apr 2012 09:35:02 GMT

Thanks for developing a badly needed product!!

I have the same problem as Issue # 6080: No message appears in the message panel and a session appears about 15 seconds after executing the smtp command.

I am running smtp4dev version 2.0.9 (installed Dec 1, 2011) on Windows Vista Business (32bit) with all Microsoft updates installed. My Windows Firewall is turned off and my Norton Internet Security firewall is also turned off.

The test I ran was using code that I copied from Issue # 6080. I only made some minor changes. The attached text file contains MailTestPage.aspx, MailTestPage.cs, web.config, and the session log results from the last test run.

Please tell me what I am doing wrong.

========================================================
2011-12-01 Issue Details

======================================
Here is the MailTestPage.aspx file:
======================================
<%@ 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 id="Head1" 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">richhowland@netzero.net</asp:TextBox>
</td>
</tr>
<tr>
<td>
<b>Subject:</b>
</td>
<td>
<asp:TextBox runat="server" ID="Subject" Columns="30">This is the subject line.</asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2">
<b>Body:</b><br />
<asp:TextBox runat="server" ID="Body" TextMode="MultiLine" Columns="55" Rows="10">This is the body

text.</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>

=========================================
Here is the MailTestPage.cs file:
=========================================

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 = "richhowland@netzero.net";
MailMessage mm = new MailMessage("richhowland@netzero.net", ToAddress);
mm.Subject = Subject.Text;
mm.Body = Body.Text;
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
//(use the Web.config settings)
smtp.Send(mm);
}
}

==========================================
Here is my web.config file:
==========================================

<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.net>
<mailSettings>
<smtp deliveryMethod="Network">
<network host="localhost" port="25"/>
</smtp>
</mailSettings>
</system.net>
</configuration>

==========================================
Here is my log message:
==========================================

220 localhost smtp4dev ready
EHLO DEVSYS20
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:<richhowland@netzero.net>
250 Okey dokey
RCPT TO:<richhowland@netzero.net>
250 Recipient accepted
RSET
250 Rset completed
Comments: ** Comment from web user: spongeboy **

I've added some comments to 8060. I had the same issue, cause was Symantec Internet Email Auto-Protect.

Disable SYMANTEC INTERNET EMAIL AUTO-PROTECT

1. Open Symantec Endpoint Protection Manager
2. Click "Options" for "Virus and Spyware Protection"
3. Go to "Internet Email Auto-Protect" tab
4. Uncheck "Enable Internet Email Auto-Protect"

Commented Issue: Session log is created but no corresponding Message is received [6080]

spongeboy — Tue, 10 Apr 2012 09:28:29 GMT

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: spongeboy **

I was getting this same error with DevNullSmtp (a similar Java app). Whilst turning on and off a SMTP server, I got an error message from "Symantec Email Proxy", which pointed me to the solution-

Disable SYMANTEC INTERNET EMAIL AUTO-PROTECT

1. Open Symantec Endpoint Protection Manager
2. Click "Options" for "Virus and Spyware Protection"
3. Go to "Internet Email Auto-Protect" tab
4. Uncheck "Enable Internet Email Auto-Protect"

Commented Issue: Session log is created but no corresponding Message is received [6080]

spongeboy — Tue, 10 Apr 2012 09:22:40 GMT

This is not just an issue with smtp4dev - I've gotten the same error with DevNullSmtpServer.

My current guess is anti-virus. I have Symantec and Outlook 2010 on the machine.

Commented Issue: Session log is created but no corresponding Message is received [6080]

spongeboy — Tue, 10 Apr 2012 08:46:46 GMT

I added a few System.Threading.Thread.Sleep(1000), but still getting error messages. Oh well.

Commented Issue: Session log is created but no corresponding Message is received [6080]

spongeboy — Tue, 10 Apr 2012 08:00:50 GMT

Still happening to me on Windows 7, version 2.0.9 and 2.1.1.0Alpha.

I tried catching the packets with Fiddler - but from a different computer it worked! Only occurring when sending from the same machine as the server.

I've tried-
* Running server as administrator

My gut feeling is that the server is replying too quickly. Maybe adding a delay before replying might fix this.

Reviewed: smtp4dev 2.0.9 (أبريل 02, 2012)

ashrafsabrym — Mon, 02 Apr 2012 19:00:01 GMT

Rated 5 Stars (out of 5) - Good application and a great idea. Thank you

Commented Issue: net_io_connectionclosed? [5767]

ryanfinken — Thu, 29 Mar 2012 15:19:49 GMT

I sometimes get an application exception: Unable to read data from the transport connection: net_io_connectionclosed.

I'm unable to reproduce consistently, and usually retrying the email fixes it.
Comments: ** Comment from web user: ryanfinken **

I am having the exact same issue and it is sporadic for me as well.

New Post: Reset SMTP4DEV to defaut.

Scalazormo — Mon, 19 Mar 2012 13:16:45 GMT

Hi all,

is there a way to reset the app to it's default settings or to make it forget about a certificate that was linked to it. I found that changing the location of the app will do that but is it possible to do it without chaging the location of the app.

Thanks a lot!

Luc

Reviewed: smtp4dev 2.0.9 (mar 15, 2012)

torlowski — Thu, 15 Mar 2012 11:07:51 GMT

Rated 5 Stars (out of 5) - This is just great, Runs with almost none configuration. Superb !!!

Created Issue: Feature request, support SMTPUTF8 [7781]

Halawaliama — Sat, 03 Mar 2012 07:00:56 GMT

It'd be cool to support SMTPUTF8 - http://datatracker.ietf.org/doc/rfc5336/
Basically it's 'just' using UTF-8 for the connection.

Commented Issue: net_io_connectionclosed? [5767]

WorkAByte — Tue, 28 Feb 2012 18:37:09 GMT

not consistent for me, happens same code block less than 50% of the time.

New Post: SSL/TLS encryption crashes application.

Scalazormo — Fri, 24 Feb 2012 15:30:16 GMT

Thanks for the quick answer. I actually got it to work perfectly now. I just exported a certificate from my Internet Explorer web browser and tied it to the application. Crashes are a thing of the past.

Cheers!

Luc

New Post: SSL/TLS encryption crashes application.

rnwood — Fri, 24 Feb 2012 14:21:21 GMT

This also affects the STARTTLS option.

New Post: SSL/TLS encryption crashes application.

rnwood — Fri, 24 Feb 2012 14:20:46 GMT

This discussion has been copied to a work item. Click here to go to the work item and continue the discussion.

Created Issue: SSL/TLS encryption with missing certificate crashes app [7760]

rnwood — Fri, 24 Feb 2012 14:20:46 GMT

SSL/TLS encryption with missing certificate crashes app

New Post: SSL/TLS encryption crashes application.

rnwood — Fri, 24 Feb 2012 14:20:42 GMT

This discussion has been copied to a work item. Click here to go to the work item and continue the discussion.

Created Issue: SSL/TLS encryption with missing certificate crashes app [7759]

rnwood — Fri, 24 Feb 2012 14:20:41 GMT

SSL/TLS encryption with missing certificate crashes app

New Post: SSL/TLS encryption crashes application.

rnwood — Fri, 24 Feb 2012 14:19:19 GMT

Luc

I believe this is an issue with the configuration dialog. You shouldn't be able to enable "Implict SSL/TLS" without first specifying a SSL certificate. The crash is causes by smtp4dev trying to establish an SSL session without having a configured SSL certificate.

If you want to use SSL you need to provide a SSL certificate that your SMTP client will trust - just configure that in the options screen and the crash should stop happening.

I'm opening a work item to fix this properly.

New Post: SSL/TLS encryption crashes application.

Scalazormo — Fri, 24 Feb 2012 13:52:24 GMT

Hi guys,

Anybody seen this problem before? I am turning on SSL/TLS encryption on a Multifunction printer to do some testing but as soon as the e-mail transferes to the PC smtp4dev crashes and needs to be closed.

Thanks a bunch.

Luc