So many people are hatin' on the Vista these days, I still like it. However, as with anything, there are a few irritances. In my case I program in .NET on my computer, and sometimes I send emails with my code. I could easily test this in XP using the IIS SMTP server that was included with XP. For security reasons Microsoft decided to not only not pre-install the SMTP server, but make it disappear. This means you need an external SMTP server to test any code that uses email, or it throws errors. Erg. So I went searching for a replacement (since Microsoft isn't bringing one) that will allow me to get my test environment back, and today I found one:

SmarterMail Free Edition is limited to 10 email users on a single domain, and includes all the functionality of SmarterMail Enterprise Edition.

Unlike trial software or shareware, free SmarterTools products contain no time limits, popup nag screens, or functionality limits (besides the user limit mentioned above).

[ Free Edition | SmarterMail 4.x | SmarterTools Inc. ]

After installing I had to find the settings and move the SMTP to 127.0.0.1:25 so I didn't need to do odd settings on my programs, but since I no longer have any other SMTP server, that should be fine.