In Rolling Restart, when testing the email function, it may not be sent out. Furthermore, a log entry may show something similar to this:

10/22/2015 03:02:42 PM; SMTP error: 429, ActiveX component can't create object

This is because a DLL did not get properly registered upon installation.

To fix this, run an Administrative Command Prompt. Change directory to the C:\Program Files\Rolling Restart folder, then run this command:

regsvr32 chilkatax.dll

Then try the test again.