Sending email with no errors, but never seems to actually be sent

Hi all,

This is my first post on this forum, as only joined up with DiscountASP today, so please be gentle with me!

I've written a bit of code that should send emails, via my DASP SMTP host. The code seems to run smoothly, with no errors or exceptions thrown. However, the emails that should be sent never actually seem to get to where they should, as if they're never being sent in the first place.

To check my code, I put in some erroneous settings (such as the wrong username or password), and the errors showed up in my app, so I know that if a problem is thrown back by the SMTP server that I will see it.

But, as I say, no errors are shown, so the email would have appeared to have gone.

Is there something I need to switch on to allow emails to be sent from Asp.Net apps?

Any help would be much appreciated!