4.3.2 Service not available
I get this error when trying to SendMail using the builtin function for test complete. This was working OK yesterday.
Forum Discussion
A quick google search shows that this is an error with the exchange server. So... your script is probably still working just fine, but something is wrong with the MS Exchange server that you are using for sending mail. Deeper search seems to indicate that the Exchange server is running out of drive space....
