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6th April 2010

Development SMTP Servers for IIS7.5 on Windows 7

Filed under: ASP.NET,C# — Tags: , , , , , — Alex Holt @ 3:43 pm

I’ve had one of them days. You know? That “simple task” that spiralled out of control and resulted in me losing half a day to it’s tricks! That task? It was sending an email from an ASP.NET (MVC2) application. Previously, I’ve always done this via setting up IIS and the SMTP server in there, but for some reason, Microsoft decided they didn’t want to include the SMTP Server in Windows 7 anymore (even ‘Ultimate’ – it might also be the case for Windows Vista). So, I had to find an alternative.

There were a few options available to me:

  • SMTP Server on Localhost: This was the obvious choice, but after trying Mercury Mail and it’s quarter of a million settings as it installed (I’m no Email Admin, so didn’t know the answer to all of them). It didn’t work and I’m not sure why. To rub salt into the would, there was no uninstall either – it proper irritated me and I gave up using it out of principal.
  • SMTP Server on Localhost that is really just a Relay. Well, sounded good – but again, it was designed by people with bigger brains than me and it failed to send to what I thought was a correctly configured IIS7.5 config pointing to my GMail account.
  • Fake Server: Something that doesn’t actually send emails, but pretends to.

The last one is the one I eventually choose and boy am I glad I did! I downloaded the excellent SMTP 4 DEV from Codeplex

  1. I don’t have 100′s of emails cluttering up my email box for starters. Win!
  2. It was so easy to set-up and it worked perfectly without a change to my code. Win!
  3. It’s free. Win!

Here is some fake code that should send an email to the localhost.

MailMessage emailMessage = new MailMessage();
string messageBody = "This is the content of the email will be awesome!";
 
emailMessage.Body = messageBody;
emailMessage.Priority = MailPriority.Normal;
emailMessage.From = new MailAddress("no-reply@amadiere.com"); // obviously, this email address doesn't exist :)
emailMessage.Subject = "The answer is 42";
emailMessage.IsBodyHtml = false;
 
SmtpClient mSmtpClient = new SmtpClient();
mSmtpClient.Host = "127.0.0.1";  // localhost
mSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
 
mSmtpClient.Send(emailMessage);

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