I've just sent out a mass email for a newsletter but it they do not seem to be sending through. The site says they have been sent, and there are no errors logged regarding it, but I've asked five members about a half hour after I sent them, and not one of them has got the email. They aren't in the spam box, and they have 'Receive Site Mailings' enabled. I still got the email however, though only on my main account, not my test accounts.
The only setting I have changed recently is I added a a Automated Bounce Handler.
I just cannot figure it out, please could someone help me out here?