having email issues and Im new to this....please help

Whenever I try to send out mass emails using Zencart I get the following error:

ERROR: Failed sending email to: "ADMIN Annette" with subject: "New sale and closeout baits" The following From address failed: aandmbaits##########################, [email protected]

I've checked my email addresses in the setup area and they are correct. Any suggestions??:huh:

What happens when you send emails to email addresses that aren't on the same domain?

None of my emails are getting to anyone. I know my internet connection is good and I know my email accounts are good.

Here's a few pointers on how to troubleshoot email:
http://www.zen-cart.com/content.php?151-emails-are-not-received-or-sending

I'd point to a FAQ on the newsletter, but can't find it. There are occasional issues when you try to send out a lot of emails at once - your host might smack it down as possible spam, there might be limits on the number of emails per minute/hour/day, they might go out but another host might blacklist you too.
Here's a thread that mentions kind of that: http://www.zen-cart.com/showthread.php?192928-ERROR-The-following-From-address-failed-XXXX&highlight=mass+emails